117742885 has 16 divisors (see below), whose sum is σ = 152861184. Its totient is φ = 86548032.

The previous prime is 117742861. The next prime is 117742903. The reversal of 117742885 is 588247711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117742885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10434 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (9553824).

Almost surely, 2^117742885 is an apocalyptic number.

It is an amenable number.

117742885 is a deficient number, since it is larger than the sum of its proper divisors (35118299).

117742885 is a wasteful number, since it uses less digits than its factorization.

117742885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364.

The product of its digits is 125440, while the sum is 43.

The square root of 117742885 is about 10850.9393602582. The cubic root of 117742885 is about 490.1303068685.

The spelling of 117742885 in words is "one hundred seventeen million, seven hundred forty-two thousand, eight hundred eighty-five".