42572631 has 4 divisors (see below), whose sum is σ = 56763512. Its totient is φ = 28381752.

The previous prime is 42572617. The next prime is 42572659. The reversal of 42572631 is 13627524.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42572631 - 2⁶ = 42572567 is a prime.

It is a super-2 number, since 2×42572631² = 3624857820524322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42572731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7095436 + ... + 7095441.

It is an arithmetic number, because the mean of its divisors is an integer number (14190878).

Almost surely, 2^42572631 is an apocalyptic number.

42572631 is a deficient number, since it is larger than the sum of its proper divisors (14190881).

42572631 is a wasteful number, since it uses less digits than its factorization.

42572631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14190880.

The product of its digits is 10080, while the sum is 30.

The square root of 42572631 is about 6524.7705706791. The cubic root of 42572631 is about 349.1752854398.

The spelling of 42572631 in words is "forty-two million, five hundred seventy-two thousand, six hundred thirty-one".