Search a number
-
+
142871430 = 23513379901
BaseRepresentation
bin10001000010000…
…00101110000110
3100221211121202110
420201000232012
5243033341210
622102121450
73353246532
oct1041005606
9327747673
10142871430
1173713469
123ba20286
13237a4310
1414d90bc2
15c822420
hex8840b86

142871430 has 64 divisors (see below), whose sum is σ = 379286208. Its totient is φ = 34214400.

The previous prime is 142871419. The next prime is 142871441. The reversal of 142871430 is 34178241.

It is an interprime number because it is at equal distance from previous prime (142871419) and next prime (142871441).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9480 + ... + 19380.

It is an arithmetic number, because the mean of its divisors is an integer number (5926347).

Almost surely, 2142871430 is an apocalyptic number.

142871430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142871430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189643104).

142871430 is an abundant number, since it is smaller than the sum of its proper divisors (236414778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142871430 is a wasteful number, since it uses less digits than its factorization.

142871430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 142871430 is about 11952.8837524674. The cubic root of 142871430 is about 522.7753850016.

The spelling of 142871430 in words is "one hundred forty-two million, eight hundred seventy-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 37 39 65 74 78 111 130 185 195 222 370 390 481 555 962 1110 1443 2405 2886 4810 7215 9901 14430 19802 29703 49505 59406 99010 128713 148515 257426 297030 366337 386139 643565 732674 772278 1099011 1287130 1831685 1930695 2198022 3663370 3861390 4762381 5495055 9524762 10990110 14287143 23811905 28574286 47623810 71435715 142871430