442500057 has 32 divisors (see below), whose sum is σ = 688997760. Its totient is φ = 280324800.

The previous prime is 442500041. The next prime is 442500061. The reversal of 442500057 is 750005244.

It is not a de Polignac number, because 442500057 - 2⁴ = 442500041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 442500057.

It is not an unprimeable number, because it can be changed into a prime (442500017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37807 + ... + 48107.

It is an arithmetic number, because the mean of its divisors is an integer number (21531180).

Almost surely, 2^442500057 is an apocalyptic number.

It is an amenable number.

442500057 is a deficient number, since it is larger than the sum of its proper divisors (246497703).

442500057 is a wasteful number, since it uses less digits than its factorization.

442500057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390 (or 10384 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 442500057 is about 21035.6853228032. The cubic root of 442500057 is about 762.0283175043.

The spelling of 442500057 in words is "four hundred forty-two million, five hundred thousand, fifty-seven".