117045138 has 16 divisors (see below), whose sum is σ = 267531840. Its totient is φ = 33441456.

The previous prime is 117045107. The next prime is 117045139. The reversal of 117045138 is 831540711.

It is not an unprimeable number, because it can be changed into a prime (117045139) 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, 1393353 + ... + 1393436.

It is an arithmetic number, because the mean of its divisors is an integer number (16720740).

Almost surely, 2^117045138 is an apocalyptic number.

117045138 is an abundant number, since it is smaller than the sum of its proper divisors (150486702).

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

117045138 is a wasteful number, since it uses less digits than its factorization.

117045138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786801.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 117045138 is about 10818.7401299782. The cubic root of 117045138 is about 489.1602136440.

Adding to 117045138 its reverse (831540711), we get a palindrome (948585849).

The spelling of 117045138 in words is "one hundred seventeen million, forty-five thousand, one hundred thirty-eight".