442361857 has 12 divisors (see below), whose sum is σ = 541668720. Its totient is φ = 359210376.

The previous prime is 442361849. The next prime is 442361869. The reversal of 442361857 is 758163244.

It is not a de Polignac number, because 442361857 - 2³ = 442361849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442361827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236643 + ... + 238504.

It is an arithmetic number, because the mean of its divisors is an integer number (45139060).

Almost surely, 2^442361857 is an apocalyptic number.

It is an amenable number.

442361857 is a deficient number, since it is larger than the sum of its proper divisors (99306863).

442361857 is a wasteful number, since it uses less digits than its factorization.

442361857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475180 (or 475173 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 442361857 is about 21032.4001721154. The cubic root of 442361857 is about 761.9489779447.

The spelling of 442361857 in words is "four hundred forty-two million, three hundred sixty-one thousand, eight hundred fifty-seven".