422642 has 8 divisors (see below), whose sum is σ = 691632. Its totient is φ = 192100.

The previous prime is 422627. The next prime is 422657. The reversal of 422642 is 246224.

422642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (422627) and next prime (422657).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9584 + ... + 9627.

It is an arithmetic number, because the mean of its divisors is an integer number (86454).

2⁴²²⁶⁴² is an apocalyptic number.

422642 is a deficient number, since it is larger than the sum of its proper divisors (268990).

422642 is a wasteful number, since it uses less digits than its factorization.

422642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19224.

The product of its digits is 768, while the sum is 20.

The square root of 422642 is about 650.1092215928. The cubic root of 422642 is about 75.0454243347.

Adding to 422642 its reverse (246224), we get a palindrome (668866).

The spelling of 422642 in words is "four hundred twenty-two thousand, six hundred forty-two".