42567656 has 8 divisors (see below), whose sum is σ = 79814370. Its totient is φ = 21283824.

The previous prime is 42567653. The next prime is 42567659. The reversal of 42567656 is 65676524.

It is an interprime number because it is at equal distance from previous prime (42567653) and next prime (42567659).

It can be written as a sum of positive squares in only one way, i.e., 37576900 + 4990756 = 6130^2 + 2234^2 .

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 (42567653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660471 + ... + 2660486.

Almost surely, 2^42567656 is an apocalyptic number.

It is an amenable number.

42567656 is a deficient number, since it is larger than the sum of its proper divisors (37246714).

42567656 is a wasteful number, since it uses less digits than its factorization.

42567656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320963 (or 5320959 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 42567656 is about 6524.3893200820. The cubic root of 42567656 is about 349.1616834716.

The spelling of 42567656 in words is "forty-two million, five hundred sixty-seven thousand, six hundred fifty-six".