42565256 has 8 divisors (see below), whose sum is σ = 79809870. Its totient is φ = 21282624.

The previous prime is 42565253. The next prime is 42565283. The reversal of 42565256 is 65256524.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 13942756 = 5350^2 + 3734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (42565253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660321 + ... + 2660336.

Almost surely, 2^42565256 is an apocalyptic number.

It is an amenable number.

42565256 is a deficient number, since it is larger than the sum of its proper divisors (37244614).

42565256 is a wasteful number, since it uses less digits than its factorization.

42565256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320663 (or 5320659 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 42565256 is about 6524.2053922298. The cubic root of 42565256 is about 349.1551213392.

The spelling of 42565256 in words is "forty-two million, five hundred sixty-five thousand, two hundred fifty-six".