42564051 has 6 divisors (see below), whose sum is σ = 61481420. Its totient is φ = 28376028.

The previous prime is 42564043. The next prime is 42564059. The reversal of 42564051 is 15046524.

42564051 is a `hidden beast` number, since 4 + 256 + 405 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (42564043) and next prime (42564059).

It is not a de Polignac number, because 42564051 - 2³ = 42564043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42564059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2364661 + ... + 2364678.

Almost surely, 2^42564051 is an apocalyptic number.

42564051 is a deficient number, since it is larger than the sum of its proper divisors (18917369).

42564051 is a wasteful number, since it uses less digits than its factorization.

42564051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729345 (or 4729342 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42564051 is about 6524.1130431653. The cubic root of 42564051 is about 349.1518265088.

The spelling of 42564051 in words is "forty-two million, five hundred sixty-four thousand, fifty-one".