442812165 has 16 divisors (see below), whose sum is σ = 732931200. Its totient is φ = 228022592.

The previous prime is 442812137. The next prime is 442812187. The reversal of 442812165 is 561218244.

It is a happy number.

It is not a de Polignac number, because 442812165 - 2⁵ = 442812133 is a prime.

It is a super-2 number, since 2×442812165² = 392165226943974450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 508545 + ... + 509414.

It is an arithmetic number, because the mean of its divisors is an integer number (45808200).

Almost surely, 2^442812165 is an apocalyptic number.

It is an amenable number.

442812165 is a deficient number, since it is larger than the sum of its proper divisors (290119035).

442812165 is a wasteful number, since it uses less digits than its factorization.

442812165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017996.

The product of its digits is 15360, while the sum is 33.

The square root of 442812165 is about 21043.1025516676. The cubic root of 442812165 is about 762.2074355518.

The spelling of 442812165 in words is "four hundred forty-two million, eight hundred twelve thousand, one hundred sixty-five".