422590 has 16 divisors (see below), whose sum is σ = 869472. Its totient is φ = 144864.

The previous prime is 422581. The next prime is 422621. The reversal of 422590 is 95224.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

422590 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, 2949 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (54342).

2⁴²²⁵⁹⁰ is an apocalyptic number.

422590 is an abundant number, since it is smaller than the sum of its proper divisors (446882).

It is a weird number, because it is abundant, but not a pseudoperfect number.

422590 is a wasteful number, since it uses less digits than its factorization.

422590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 422590 is about 650.0692270828. The cubic root of 422590 is about 75.0423464562.

The spelling of 422590 in words is "four hundred twenty-two thousand, five hundred ninety".