442912668 has 48 divisors (see below), whose sum is σ = 1154926080. Its totient is φ = 130940800.

The previous prime is 442912637. The next prime is 442912693. The reversal of 442912668 is 866219244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35508 + ... + 46331.

It is an arithmetic number, because the mean of its divisors is an integer number (24060960).

Almost surely, 2^442912668 is an apocalyptic number.

It is an amenable number.

442912668 is an abundant number, since it is smaller than the sum of its proper divisors (712013412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442912668 is a wasteful number, since it uses less digits than its factorization.

442912668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81898 (or 81896 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 442912668 is about 21045.4904433230. The cubic root of 442912668 is about 762.2650960718.

The spelling of 442912668 in words is "four hundred forty-two million, nine hundred twelve thousand, six hundred sixty-eight".