117571139 has 16 divisors (see below), whose sum is σ = 138240000. Its totient is φ = 99944712.

The previous prime is 117571123. The next prime is 117571169. The reversal of 117571139 is 931175711.

It is not a de Polignac number, because 117571139 - 2⁴ = 117571123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117571099 and 117571108.

It is not an unprimeable number, because it can be changed into a prime (117571109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42212 + ... + 44910.

It is an arithmetic number, because the mean of its divisors is an integer number (8640000).

Almost surely, 2^117571139 is an apocalyptic number.

117571139 is a deficient number, since it is larger than the sum of its proper divisors (20668861).

117571139 is an equidigital number, since it uses as much as digits as its factorization.

117571139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847 (or 2833 counting only the distinct ones).

The product of its digits is 6615, while the sum is 35.

The square root of 117571139 is about 10843.0225951992. The cubic root of 117571139 is about 489.8918809071.

The spelling of 117571139 in words is "one hundred seventeen million, five hundred seventy-one thousand, one hundred thirty-nine".