422420164 has 12 divisors (see below), whose sum is σ = 746144784. Its totient is φ = 209235944.

The previous prime is 422420147. The next prime is 422420197. The reversal of 422420164 is 461024224.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493054 + ... + 493909.

It is an arithmetic number, because the mean of its divisors is an integer number (62178732).

Almost surely, 2^422420164 is an apocalyptic number.

It is an amenable number.

422420164 is a deficient number, since it is larger than the sum of its proper divisors (323724620).

422420164 is a wasteful number, since it uses less digits than its factorization.

422420164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987074 (or 987072 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 422420164 is about 20552.8626716572. The cubic root of 422420164 is about 750.3229210908.

Adding to 422420164 its reverse (461024224), we get a palindrome (883444388).

The spelling of 422420164 in words is "four hundred twenty-two million, four hundred twenty thousand, one hundred sixty-four".