442540264 has 16 divisors (see below), whose sum is σ = 831460320. Its totient is φ = 220817520.

The previous prime is 442540223. The next prime is 442540271. The reversal of 442540264 is 462045244.

It is a happy number.

It is a super-2 number, since 2×442540264² = 391683770522379392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52404 + ... + 60259.

It is an arithmetic number, because the mean of its divisors is an integer number (51966270).

Almost surely, 2^442540264 is an apocalyptic number.

It is an amenable number.

442540264 is a deficient number, since it is larger than the sum of its proper divisors (388920056).

442540264 is a wasteful number, since it uses less digits than its factorization.

442540264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113160 (or 113156 counting only the distinct ones).

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

The square root of 442540264 is about 21036.6409866214. The cubic root of 442540264 is about 762.0513969323.

The spelling of 442540264 in words is "four hundred forty-two million, five hundred forty thousand, two hundred sixty-four".