422843172 has 12 divisors (see below), whose sum is σ = 986634096. Its totient is φ = 140947720.

The previous prime is 422843167. The next prime is 422843177. The reversal of 422843172 is 271348224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (422843167) and next prime (422843177).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (422843177) by changing a digit.

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, 17618454 + ... + 17618477.

It is an arithmetic number, because the mean of its divisors is an integer number (82219508).

Almost surely, 2^422843172 is an apocalyptic number.

It is an amenable number.

422843172 is an abundant number, since it is smaller than the sum of its proper divisors (563790924).

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

422843172 is a wasteful number, since it uses less digits than its factorization.

422843172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35236938 (or 35236936 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 422843172 is about 20563.1508286060. The cubic root of 422843172 is about 750.5732932237.

The spelling of 422843172 in words is "four hundred twenty-two million, eight hundred forty-three thousand, one hundred seventy-two".