442312144 has 20 divisors (see below), whose sum is σ = 871506720. Its totient is φ = 217407200.

The previous prime is 442312139. The next prime is 442312151. The reversal of 442312144 is 441213244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233332 + ... + 235219.

It is an arithmetic number, because the mean of its divisors is an integer number (43575336).

Almost surely, 2^442312144 is an apocalyptic number.

It is an amenable number.

442312144 is a deficient number, since it is larger than the sum of its proper divisors (429194576).

442312144 is a wasteful number, since it uses less digits than its factorization.

442312144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468618 (or 468612 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 442312144 is about 21031.2183194412. The cubic root of 442312144 is about 761.9204340516.

Adding to 442312144 its reverse (441213244), we get a palindrome (883525388).

The spelling of 442312144 in words is "four hundred forty-two million, three hundred twelve thousand, one hundred forty-four".