118564842 has 16 divisors (see below), whose sum is σ = 258687072. Its totient is φ = 35928720.

The previous prime is 118564819. The next prime is 118564843. The reversal of 118564842 is 248465811.

It is a self number, because there is not a number n which added to its sum of digits gives 118564842.

It is not an unprimeable number, because it can be changed into a prime (118564843) 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, 898153 + ... + 898284.

It is an arithmetic number, because the mean of its divisors is an integer number (16167942).

Almost surely, 2^118564842 is an apocalyptic number.

118564842 is an abundant number, since it is smaller than the sum of its proper divisors (140122230).

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

118564842 is a wasteful number, since it uses less digits than its factorization.

118564842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796453.

The product of its digits is 61440, while the sum is 39.

The square root of 118564842 is about 10888.7484129261. The cubic root of 118564842 is about 491.2681879196.

The spelling of 118564842 in words is "one hundred eighteen million, five hundred sixty-four thousand, eight hundred forty-two".