442858 has 8 divisors (see below), whose sum is σ = 715428. Its totient is φ = 204384.

The previous prime is 442843. The next prime is 442861. The reversal of 442858 is 858244.

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 49729 = 627^2 + 223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×442858² = 392246416328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8491 + ... + 8542.

2⁴⁴²⁸⁵⁸ is an apocalyptic number.

442858 is a deficient number, since it is larger than the sum of its proper divisors (272570).

442858 is a wasteful number, since it uses less digits than its factorization.

442858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17048.

The product of its digits is 10240, while the sum is 31.

The square root of 442858 is about 665.4757696566. The cubic root of 442858 is about 76.2233733062.

The spelling of 442858 in words is "four hundred forty-two thousand, eight hundred fifty-eight".