422118 has 16 divisors (see below), whose sum is σ = 938160. Its totient is φ = 140688.

The previous prime is 422113. The next prime is 422129. The reversal of 422118 is 811224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 422118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855 + ... + 3962.

It is an arithmetic number, because the mean of its divisors is an integer number (58635).

2⁴²²¹¹⁸ is an apocalyptic number.

422118 is an abundant number, since it is smaller than the sum of its proper divisors (516042).

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

422118 is a wasteful number, since it uses less digits than its factorization.

422118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828 (or 7822 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 422118 is about 649.7060873964. The cubic root of 422118 is about 75.0143972361.

It can be divided in two parts, 4 and 22118, that added together give a palindrome (22122).

The spelling of 422118 in words is "four hundred twenty-two thousand, one hundred eighteen".