117945 has 12 divisors (see below), whose sum is σ = 204516. Its totient is φ = 62880.

The previous prime is 117937. The next prime is 117959. The reversal of 117945 is 549711.

It can be written as a sum of positive squares in 2 ways, for example, as 71289 + 46656 = 267^2 + 216^2 .

It is not a de Polignac number, because 117945 - 2³ = 117937 is a prime.

It is a super-2 number, since 2×117945² = 27822046050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1266 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (17043).

2¹¹⁷⁹⁴⁵ is an apocalyptic number.

117945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117945 is a deficient number, since it is larger than the sum of its proper divisors (86571).

117945 is a wasteful number, since it uses less digits than its factorization.

117945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632 (or 2629 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 117945 is about 343.4312158206. The cubic root of 117945 is about 49.0410595731.

The spelling of 117945 in words is "one hundred seventeen thousand, nine hundred forty-five".