442090 has 16 divisors (see below), whose sum is σ = 868320. Its totient is φ = 160720.

The previous prime is 442069. The next prime is 442097. The reversal of 442090 is 90244.

It is not an unprimeable number, because it can be changed into a prime (442097) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1900 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (54270).

2⁴⁴²⁰⁹⁰ is an apocalyptic number.

442090 is a deficient number, since it is larger than the sum of its proper divisors (426230).

442090 is a wasteful number, since it uses less digits than its factorization.

442090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 442090 is about 664.8984884928. The cubic root of 442090 is about 76.1792858689.

The spelling of 442090 in words is "four hundred forty-two thousand, ninety".