118420158 has 32 divisors (see below), whose sum is σ = 240084000. Its totient is φ = 38936576.

The previous prime is 118420157. The next prime is 118420171. The reversal of 118420158 is 851024811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118420157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263518 + ... + 263966.

It is an arithmetic number, because the mean of its divisors is an integer number (7502625).

Almost surely, 2^118420158 is an apocalyptic number.

118420158 is an abundant number, since it is smaller than the sum of its proper divisors (121663842).

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

118420158 is a wasteful number, since it uses less digits than its factorization.

118420158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 118420158 is about 10882.1026460882. The cubic root of 118420158 is about 491.0682759918.

Adding to 118420158 its reverse (851024811), we get a palindrome (969444969).

The spelling of 118420158 in words is "one hundred eighteen million, four hundred twenty thousand, one hundred fifty-eight".