42356564 has 24 divisors (see below), whose sum is σ = 76719720. Its totient is φ = 20445696.

The previous prime is 42356563. The next prime is 42356579. The reversal of 42356564 is 46565324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25200400 + 17156164 = 5020^2 + 4142^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42356563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19232 + ... + 21320.

It is an arithmetic number, because the mean of its divisors is an integer number (3196655).

Almost surely, 2^42356564 is an apocalyptic number.

It is an amenable number.

42356564 is a deficient number, since it is larger than the sum of its proper divisors (34363156).

42356564 is a wasteful number, since it uses less digits than its factorization.

42356564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2265 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 42356564 is about 6508.1920684626. The cubic root of 42356564 is about 348.5835652792.

The spelling of 42356564 in words is "forty-two million, three hundred fifty-six thousand, five hundred sixty-four".