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142893720 = 2335561241
BaseRepresentation
bin10001000010001…
…10001010011000
3100221212202100000
420201012022120
5243040044340
622102413000
73353401524
oct1041061230
9327782300
10142893720
1173729192
123ba31160
13237b14c8
1414d98d84
15c828d30
hex8846298

142893720 has 192 divisors, whose sum is σ = 491531040. Its totient is φ = 37324800.

The previous prime is 142893719. The next prime is 142893727. The reversal of 142893720 is 27398241.

142893720 is a `hidden beast` number, since 1 + 4 + 289 + 372 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142893727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 592800 + ... + 593040.

Almost surely, 2142893720 is an apocalyptic number.

142893720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142893720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245765520).

142893720 is an abundant number, since it is smaller than the sum of its proper divisors (348637320).

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

142893720 is a wasteful number, since it uses less digits than its factorization.

142893720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 142893720 is about 11953.8161270784. The cubic root of 142893720 is about 522.8025704167.

The spelling of 142893720 in words is "one hundred forty-two million, eight hundred ninety-three thousand, seven hundred twenty".