442331144 has 16 divisors (see below), whose sum is σ = 834461520. Its totient is φ = 219808080.

The previous prime is 442331137. The next prime is 442331203. The reversal of 442331144 is 441133244.

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, 168302 + ... + 170909.

It is an arithmetic number, because the mean of its divisors is an integer number (52153845).

Almost surely, 2^442331144 is an apocalyptic number.

It is an amenable number.

442331144 is a deficient number, since it is larger than the sum of its proper divisors (392130376).

442331144 is a wasteful number, since it uses less digits than its factorization.

442331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339380 (or 339376 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 442331144 is about 21031.6700240376. The cubic root of 442331144 is about 761.9313436029.

Adding to 442331144 its reverse (441133244), we get a palindrome (883464388).

The spelling of 442331144 in words is "four hundred forty-two million, three hundred thirty-one thousand, one hundred forty-four".