42562431 has 12 divisors (see below), whose sum is σ = 62322208. Its totient is φ = 27985824.

The previous prime is 42562417. The next prime is 42562433. The reversal of 42562431 is 13426524.

42562431 is a `hidden beast` number, since 4 + 2 + 5 + 624 + 31 = 666.

It is not a de Polignac number, because 42562431 - 2¹¹ = 42560383 is a prime.

It is a super-2 number, since 2×42562431² = 3623121065259522, 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 = 42562395 and 42562404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42562433) 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, 31735 + ... + 33048.

Almost surely, 2^42562431 is an apocalyptic number.

42562431 is a deficient number, since it is larger than the sum of its proper divisors (19759777).

42562431 is a wasteful number, since it uses less digits than its factorization.

42562431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64862 (or 64859 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42562431 is about 6523.9888871763. The cubic root of 42562431 is about 349.1473968464.

Adding to 42562431 its reverse (13426524), we get a palindrome (55988955).

The spelling of 42562431 in words is "forty-two million, five hundred sixty-two thousand, four hundred thirty-one".