42592531 has 12 divisors (see below), whose sum is σ = 45490032. Its totient is φ = 39870848.

The previous prime is 42592523. The next prime is 42592541. The reversal of 42592531 is 13529524.

It is not a de Polignac number, because 42592531 - 2³ = 42592523 is a prime.

It is a super-2 number, since 2×42592531² = 3628247393971922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42592493 and 42592502.

It is not an unprimeable number, because it can be changed into a prime (42592541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84426 + ... + 84928.

It is an arithmetic number, because the mean of its divisors is an integer number (3790836).

Almost surely, 2^42592531 is an apocalyptic number.

42592531 is a deficient number, since it is larger than the sum of its proper divisors (2897501).

42592531 is a wasteful number, since it uses less digits than its factorization.

42592531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 813 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 42592531 is about 6526.2953503500. The cubic root of 42592531 is about 349.2296827182.

The spelling of 42592531 in words is "forty-two million, five hundred ninety-two thousand, five hundred thirty-one".