442508 has 24 divisors (see below), whose sum is σ = 861840. Its totient is φ = 197120.

The previous prime is 442501. The next prime is 442517. The reversal of 442508 is 805244.

It is not an unprimeable number, because it can be changed into a prime (442501) by changing a digit.

442508 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 3972.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2⁴⁴²⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

442508 is a deficient number, since it is larger than the sum of its proper divisors (419332).

442508 is a wasteful number, since it uses less digits than its factorization.

442508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 442508 is about 665.2127479235. The cubic root of 442508 is about 76.2032877018.

It can be divided in two parts, 44 and 2508, that added together give a palindrome (2552).

The spelling of 442508 in words is "four hundred forty-two thousand, five hundred eight".