442558 has 8 divisors (see below), whose sum is σ = 672480. Its totient is φ = 218400.

The previous prime is 442537. The next prime is 442571. The reversal of 442558 is 855244.

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

It is a congruent number.

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, 1243 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (84060).

2⁴⁴²⁵⁵⁸ is an apocalyptic number.

442558 is a deficient number, since it is larger than the sum of its proper divisors (229922).

442558 is a wasteful number, since it uses less digits than its factorization.

442558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882.

The product of its digits is 6400, while the sum is 28.

The square root of 442558 is about 665.2503288237. The cubic root of 442558 is about 76.2061577221.

Subtracting 442558 from its reverse (855244), we obtain a triangular number (412686 = T₉₀₈).

It can be divided in two parts, 442 and 558, that added together give a cube (1000 = 10³).

The spelling of 442558 in words is "four hundred forty-two thousand, five hundred fifty-eight".