442538 has 8 divisors (see below), whose sum is σ = 666660. Its totient is φ = 220320.

The previous prime is 442537. The next prime is 442571. The reversal of 442538 is 835244.

It can be written as a sum of positive squares in 2 ways, for example, as 426409 + 16129 = 653^2 + 127^2 .

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

It is not an unprimeable number, because it can be changed into a prime (442531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 1088.

2⁴⁴²⁵³⁸ is an apocalyptic number.

442538 is a deficient number, since it is larger than the sum of its proper divisors (224122).

442538 is a wasteful number, since it uses less digits than its factorization.

442538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its digits is 3840, while the sum is 26.

The square root of 442538 is about 665.2352967184. The cubic root of 442538 is about 76.2050097399.

The spelling of 442538 in words is "four hundred forty-two thousand, five hundred thirty-eight".