442458 has 24 divisors (see below), whose sum is σ = 980928. Its totient is φ = 144072.

The previous prime is 442457. The next prime is 442469. The reversal of 442458 is 854244.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442458.

It is not an unprimeable number, because it can be changed into a prime (442457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585 + ... + 1107.

It is an arithmetic number, because the mean of its divisors is an integer number (40872).

2⁴⁴²⁴⁵⁸ is an apocalyptic number.

442458 is an abundant number, since it is smaller than the sum of its proper divisors (538470).

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

442458 is a wasteful number, since it uses less digits than its factorization.

442458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 575 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 442458 is about 665.1751649002. The cubic root of 442458 is about 76.2004174652.

It can be divided in two parts, 44245 and 8, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 442458 in words is "four hundred forty-two thousand, four hundred fifty-eight".