42345533531 has 16 divisors (see below), whose sum is σ = 49587346368. Its totient is φ = 35402265600.

The previous prime is 42345533521. The next prime is 42345533537. The reversal of 42345533531 is 13533554324.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42345533531 is a prime.

It is a super-2 number, since 2×42345533531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42345533537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339301 + ... + 1370553.

It is an arithmetic number, because the mean of its divisors is an integer number (3099209148).

Almost surely, 2^42345533531 is an apocalyptic number.

42345533531 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42345533531 is a deficient number, since it is larger than the sum of its proper divisors (7241812837).

42345533531 is a wasteful number, since it uses less digits than its factorization.

42345533531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36022.

The product of its digits is 324000, while the sum is 38.

The spelling of 42345533531 in words is "forty-two billion, three hundred forty-five million, five hundred thirty-three thousand, five hundred thirty-one".