442660 has 12 divisors (see below), whose sum is σ = 929628. Its totient is φ = 177056.

The previous prime is 442633. The next prime is 442691. The reversal of 442660 is 66244.

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 256036 = 432^2 + 506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11047 + ... + 11086.

It is an arithmetic number, because the mean of its divisors is an integer number (77469).

2⁴⁴²⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

442660 is an abundant number, since it is smaller than the sum of its proper divisors (486968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442660 is a wasteful number, since it uses less digits than its factorization.

442660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22142 (or 22140 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 442660 is about 665.3269872777. The cubic root of 442660 is about 76.2120118934.

It can be divided in two parts, 44 and 2660, that added together give a square (2704 = 52²).

The spelling of 442660 in words is "four hundred forty-two thousand, six hundred sixty".