118155242 has 8 divisors (see below), whose sum is σ = 177322500. Its totient is φ = 59047744.

The previous prime is 118155223. The next prime is 118155263. The reversal of 118155242 is 242551811.

It can be written as a sum of positive squares in 2 ways, for example, as 110859841 + 7295401 = 10529^2 + 2701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×118155242² = 27921322424157128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9617 + ... + 18132.

Almost surely, 2^118155242 is an apocalyptic number.

118155242 is a deficient number, since it is larger than the sum of its proper divisors (59167258).

118155242 is a wasteful number, since it uses less digits than its factorization.

118155242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880.

The product of its digits is 3200, while the sum is 29.

The square root of 118155242 is about 10869.9237347831. The cubic root of 118155242 is about 490.7018153734.

The spelling of 118155242 in words is "one hundred eighteen million, one hundred fifty-five thousand, two hundred forty-two".