42564616 has 16 divisors (see below), whose sum is σ = 79973100. Its totient is φ = 21238464.

The previous prime is 42564611. The next prime is 42564659. The reversal of 42564616 is 61646524.

It can be written as a sum of positive squares in 2 ways, for example, as 33016516 + 9548100 = 5746^2 + 3090^2 .

It is not an unprimeable number, because it can be changed into a prime (42564611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155 + ... + 9298.

Almost surely, 2^42564616 is an apocalyptic number.

It is an amenable number.

42564616 is a deficient number, since it is larger than the sum of its proper divisors (37408484).

42564616 is a wasteful number, since it uses less digits than its factorization.

42564616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10968 (or 10964 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 42564616 is about 6524.1563439268. The cubic root of 42564616 is about 349.1533713955.

The spelling of 42564616 in words is "forty-two million, five hundred sixty-four thousand, six hundred sixteen".