118422 has 40 divisors (see below), whose sum is σ = 287496. Its totient is φ = 36288.

The previous prime is 118411. The next prime is 118423. The reversal of 118422 is 224811.

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

It is a junction number, because it is equal to n+sod(n) for n = 118395 and 118404.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 118422.

It is not an unprimeable number, because it can be changed into a prime (118423) by changing a digit.

118422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2733 + ... + 2775.

2¹¹⁸⁴²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143748).

118422 is an abundant number, since it is smaller than the sum of its proper divisors (169074).

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

118422 is a wasteful number, since it uses less digits than its factorization.

118422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 65 counting only the distinct ones).

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

The square root of 118422 is about 344.1249772975. The cubic root of 118422 is about 49.1070822132.

The spelling of 118422 in words is "one hundred eighteen thousand, four hundred twenty-two".