118129 has 4 divisors (see below), whose sum is σ = 128880. Its totient is φ = 107380.

The previous prime is 118127. The next prime is 118147. The reversal of 118129 is 921811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118129 - 2¹ = 118127 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 5359 + ... + 5380.

It is an arithmetic number, because the mean of its divisors is an integer number (32220).

2¹¹⁸¹²⁹ is an apocalyptic number.

It is an amenable number.

118129 is a deficient number, since it is larger than the sum of its proper divisors (10751).

118129 is a wasteful number, since it uses less digits than its factorization.

118129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750.

The product of its digits is 144, while the sum is 22.

The square root of 118129 is about 343.6989962162. The cubic root of 118129 is about 49.0665484779.

The spelling of 118129 in words is "one hundred eighteen thousand, one hundred twenty-nine".