118117 has 4 divisors (see below), whose sum is σ = 122220. Its totient is φ = 114016.

The previous prime is 118093. The next prime is 118127. The reversal of 118117 is 711811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34596 + 83521 = 186^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 118117 - 2⁷ = 117989 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 = 118094 and 118103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008 + ... + 2065.

It is an arithmetic number, because the mean of its divisors is an integer number (30555).

2¹¹⁸¹¹⁷ is an apocalyptic number.

It is an amenable number.

118117 is a deficient number, since it is larger than the sum of its proper divisors (4103).

118117 is an equidigital number, since it uses as much as digits as its factorization.

118117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102.

The product of its digits is 56, while the sum is 19.

The square root of 118117 is about 343.6815386372. The cubic root of 118117 is about 49.0648869652.

Adding to 118117 its reverse (711811), we get a palindrome (829928).

It can be divided in two parts, 11 and 8117, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 118117 in words is "one hundred eighteen thousand, one hundred seventeen".