422508 has 24 divisors (see below), whose sum is σ = 996912. Its totient is φ = 139264.

The previous prime is 422479. The next prime is 422537. The reversal of 422508 is 805224.

It is an interprime number because it is at equal distance from previous prime (422479) and next prime (422537).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1516 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (41538).

2⁴²²⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

422508 is an abundant number, since it is smaller than the sum of its proper divisors (574404).

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

422508 is a wasteful number, since it uses less digits than its factorization.

422508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 422508 is about 650.0061538170. The cubic root of 422508 is about 75.0374923656.

The spelling of 422508 in words is "four hundred twenty-two thousand, five hundred eight".