118115 has 4 divisors (see below), whose sum is σ = 141744. Its totient is φ = 94488.

The previous prime is 118093. The next prime is 118127. The reversal of 118115 is 511811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118115 - 2⁶ = 118051 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118093 and 118102.

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, 11807 + ... + 11816.

It is an arithmetic number, because the mean of its divisors is an integer number (35436).

2¹¹⁸¹¹⁵ is an apocalyptic number.

118115 is a deficient number, since it is larger than the sum of its proper divisors (23629).

118115 is an equidigital number, since it uses as much as digits as its factorization.

118115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23628.

The product of its digits is 40, while the sum is 17.

The square root of 118115 is about 343.6786289544. The cubic root of 118115 is about 49.0646100354.

Adding to 118115 its reverse (511811), we get a palindrome (629926).

The spelling of 118115 in words is "one hundred eighteen thousand, one hundred fifteen".