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1240424531 = 10160720233
BaseRepresentation
bin100100111101111…
…0110000001010011
310012110002002120022
41021323312001103
510020022041111
6323030334055
742511302023
oct11173660123
93173062508
101240424531
11587207345
122a74ba32b
13169ca9318
14baa53a83
1573d732db
hex49ef6053

1240424531 has 8 divisors (see below), whose sum is σ = 1254831744. Its totient is φ = 1226059200.

The previous prime is 1240424513. The next prime is 1240424543. The reversal of 1240424531 is 1354240421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1240424531 - 210 = 1240423507 is a prime.

It is a super-2 number, since 2×12404245312 = 3077306034213139922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240424531.

It is not an unprimeable number, because it can be changed into a prime (1240424231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51191 + ... + 71423.

It is an arithmetic number, because the mean of its divisors is an integer number (156853968).

Almost surely, 21240424531 is an apocalyptic number.

1240424531 is a deficient number, since it is larger than the sum of its proper divisors (14407213).

1240424531 is a wasteful number, since it uses less digits than its factorization.

1240424531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1240424531 is about 35219.6611426061. The cubic root of 1240424531 is about 1074.4596616749.

Adding to 1240424531 its reverse (1354240421), we get a palindrome (2594664952).

The spelling of 1240424531 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, five hundred thirty-one".

Divisors: 1 101 607 20233 61307 2043533 12281431 1240424531