422420940 has 96 divisors (see below), whose sum is σ = 1318464000. Its totient is φ = 112280256.

The previous prime is 422420899. The next prime is 422420941. The reversal of 422420940 is 49024224.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (422420941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192771 + ... + 194949.

It is an arithmetic number, because the mean of its divisors is an integer number (13734000).

Almost surely, 2^422420940 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 422420940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659232000).

422420940 is an abundant number, since it is smaller than the sum of its proper divisors (896043060).

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

422420940 is a wasteful number, since it uses less digits than its factorization.

422420940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 422420940 is about 20552.8815497973. The cubic root of 422420940 is about 750.3233805467.

The spelling of 422420940 in words is "four hundred twenty-two million, four hundred twenty thousand, nine hundred forty".