422506 has 16 divisors (see below), whose sum is σ = 733824. Its totient is φ = 178704.

The previous prime is 422479. The next prime is 422537. The reversal of 422506 is 605224.

It is a super-2 number, since 2×422506² = 357022640072, which contains 22 as substring.

It is an unprimeable number.

422506 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, 1296 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

422506 is a Friedman number, since it can be written as 650^2+4+2, using all its digits and the basic arithmetic operations.

2⁴²²⁵⁰⁶ is an apocalyptic number.

422506 is a deficient number, since it is larger than the sum of its proper divisors (311318).

422506 is a wasteful number, since it uses less digits than its factorization.

422506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 422506 is about 650.0046153682. The cubic root of 422506 is about 75.0373739653.

The spelling of 422506 in words is "four hundred twenty-two thousand, five hundred six".