422490 has 16 divisors (see below), whose sum is σ = 1014048. Its totient is φ = 112656.

The previous prime is 422479. The next prime is 422537. The reversal of 422490 is 94224.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422490.

It is an unprimeable number.

422490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (63378).

2⁴²²⁴⁹⁰ is an apocalyptic number.

422490 is an abundant number, since it is smaller than the sum of its proper divisors (591558).

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

422490 is a wasteful number, since it uses less digits than its factorization.

422490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14093.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 422490 is about 649.9923076468. The cubic root of 422490 is about 75.0364267495.

The spelling of 422490 in words is "four hundred twenty-two thousand, four hundred ninety".