422905140 has 144 divisors (see below), whose sum is σ = 1529918208. Its totient is φ = 92454912.

The previous prime is 422905123. The next prime is 422905151. The reversal of 422905140 is 41509224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21684 + ... + 36276.

It is an arithmetic number, because the mean of its divisors is an integer number (10624432).

Almost surely, 2^422905140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422905140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764959104).

422905140 is an abundant number, since it is smaller than the sum of its proper divisors (1107013068).

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

422905140 is a wasteful number, since it uses less digits than its factorization.

422905140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14638 (or 14633 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 422905140 is about 20564.6575463828. The cubic root of 422905140 is about 750.6099571352.

The spelling of 422905140 in words is "four hundred twenty-two million, nine hundred five thousand, one hundred forty".