117912 has 32 divisors (see below), whose sum is σ = 313200. Its totient is φ = 36992.

The previous prime is 117911. The next prime is 117917. The reversal of 117912 is 219711.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=34.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117911) 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, 6928 + ... + 6944.

2¹¹⁷⁹¹² is an apocalyptic number.

117912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156600).

117912 is an abundant number, since it is smaller than the sum of its proper divisors (195288).

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

117912 is an equidigital number, since it uses as much as digits as its factorization.

117912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 22 counting only the distinct ones).

The product of its digits is 126, while the sum is 21.

The square root of 117912 is about 343.3831679043. The cubic root of 117912 is about 49.0364853905.

The spelling of 117912 in words is "one hundred seventeen thousand, nine hundred twelve".