442425164 has 12 divisors (see below), whose sum is σ = 775076904. Its totient is φ = 220974624.

The previous prime is 442425157. The next prime is 442425167. The reversal of 442425164 is 461524244.

It is a self number, because there is not a number n which added to its sum of digits gives 442425164.

It is not an unprimeable number, because it can be changed into a prime (442425167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55274 + ... + 62769.

It is an arithmetic number, because the mean of its divisors is an integer number (64589742).

Almost surely, 2^442425164 is an apocalyptic number.

It is an amenable number.

442425164 is a deficient number, since it is larger than the sum of its proper divisors (332651740).

442425164 is a wasteful number, since it uses less digits than its factorization.

442425164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118984 (or 118982 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

The square root of 442425164 is about 21033.9051058048. The cubic root of 442425164 is about 761.9853240584.

The spelling of 442425164 in words is "four hundred forty-two million, four hundred twenty-five thousand, one hundred sixty-four".