42567631 has 2 divisors, whose sum is σ = 42567632. Its totient is φ = 42567630.

The previous prime is 42567617. The next prime is 42567653. The reversal of 42567631 is 13676524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42567631 - 2⁵ = 42567599 is a prime.

It is a super-2 number, since 2×42567631² = 3624006417904322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42567601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21283815 + 21283816.

It is an arithmetic number, because the mean of its divisors is an integer number (21283816).

Almost surely, 2^42567631 is an apocalyptic number.

42567631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42567631 is an equidigital number, since it uses as much as digits as its factorization.

42567631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 42567631 is about 6524.3874041936. The cubic root of 42567631 is about 349.1616151173.

The spelling of 42567631 in words is "forty-two million, five hundred sixty-seven thousand, six hundred thirty-one".