117138740 has 24 divisors (see below), whose sum is σ = 246917160. Its totient is φ = 46679168.

The previous prime is 117138737. The next prime is 117138787. The reversal of 117138740 is 47831711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2477476 + 114661264 = 1574^2 + 10708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117138697 and 117138706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507 + ... + 16266.

It is an arithmetic number, because the mean of its divisors is an integer number (10288215).

Almost surely, 2^117138740 is an apocalyptic number.

117138740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117138740 is an abundant number, since it is smaller than the sum of its proper divisors (129778420).

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

117138740 is a wasteful number, since it uses less digits than its factorization.

117138740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051 (or 22049 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 117138740 is about 10823.0651850573. The cubic root of 117138740 is about 489.2905741052.

The spelling of 117138740 in words is "one hundred seventeen million, one hundred thirty-eight thousand, seven hundred forty".