442564402 has 16 divisors (see below), whose sum is σ = 759061440. Its totient is φ = 189575568.

The previous prime is 442564357. The next prime is 442564403. The reversal of 442564402 is 204465244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (442564403) 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, 26124 + ... + 39592.

It is an arithmetic number, because the mean of its divisors is an integer number (47441340).

Almost surely, 2^442564402 is an apocalyptic number.

442564402 is a deficient number, since it is larger than the sum of its proper divisors (316497038).

442564402 is a wasteful number, since it uses less digits than its factorization.

442564402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15825.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 442564402 is about 21037.2146920642. The cubic root of 442564402 is about 762.0652518390.

The spelling of 442564402 in words is "four hundred forty-two million, five hundred sixty-four thousand, four hundred two".