442590 has 16 divisors (see below), whose sum is σ = 1062288. Its totient is φ = 118016.

The previous prime is 442579. The next prime is 442601. The reversal of 442590 is 95244.

It is an interprime number because it is at equal distance from previous prime (442579) and next prime (442601).

It is a self number, because there is not a number n which added to its sum of digits gives 442590.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442590.

It is an unprimeable number.

442590 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 7406.

It is an arithmetic number, because the mean of its divisors is an integer number (66393).

2⁴⁴²⁵⁹⁰ is an apocalyptic number.

442590 is an abundant number, since it is smaller than the sum of its proper divisors (619698).

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

442590 is a wasteful number, since it uses less digits than its factorization.

442590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14763.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 442590 is about 665.2743794856. The cubic root of 442590 is about 76.2079944217.

The spelling of 442590 in words is "four hundred forty-two thousand, five hundred ninety".