42564634 has 48 divisors (see below), whose sum is σ = 81443880. Its totient is φ = 16558080.

The previous prime is 42564611. The next prime is 42564659. The reversal of 42564634 is 43646524.

It can be written as a sum of positive squares in 4 ways, for example, as 35820225 + 6744409 = 5985^2 + 2597^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 42564634.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47874 + ... + 48754.

Almost surely, 2^42564634 is an apocalyptic number.

42564634 is a deficient number, since it is larger than the sum of its proper divisors (38879246).

42564634 is a wasteful number, since it uses less digits than its factorization.

42564634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 936 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 42564634 is about 6524.1577234153. The cubic root of 42564634 is about 349.1534206129.

The spelling of 42564634 in words is "forty-two million, five hundred sixty-four thousand, six hundred thirty-four".