442630161 has 24 divisors (see below), whose sum is σ = 675492480. Its totient is φ = 278841696.

The previous prime is 442630159. The next prime is 442630229. The reversal of 442630161 is 161036244.

442630161 is a `hidden beast` number, since 442 + 63 + 0 + 161 = 666.

It is not a de Polignac number, because 442630161 - 2¹ = 442630159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442630141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5775 + ... + 30308.

It is an arithmetic number, because the mean of its divisors is an integer number (28145520).

Almost surely, 2^442630161 is an apocalyptic number.

It is an amenable number.

442630161 is a deficient number, since it is larger than the sum of its proper divisors (232862319).

442630161 is a wasteful number, since it uses less digits than its factorization.

442630161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36165 (or 36162 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 442630161 is about 21038.7775547915. Note that the first 3 decimals coincide. The cubic root of 442630161 is about 762.1029941177.

The spelling of 442630161 in words is "four hundred forty-two million, six hundred thirty thousand, one hundred sixty-one".