117121975 has 6 divisors (see below), whose sum is σ = 145231280. Its totient is φ = 93697560.

The previous prime is 117121951. The next prime is 117121987. The reversal of 117121975 is 579121711.

It is not a de Polignac number, because 117121975 - 2¹³ = 117113783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117121975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2342415 + ... + 2342464.

Almost surely, 2^117121975 is an apocalyptic number.

117121975 is a deficient number, since it is larger than the sum of its proper divisors (28109305).

117121975 is an equidigital number, since it uses as much as digits as its factorization.

117121975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684889 (or 4684884 counting only the distinct ones).

The product of its digits is 4410, while the sum is 34.

The square root of 117121975 is about 10822.2906540159. The cubic root of 117121975 is about 489.2672304250.

The spelling of 117121975 in words is "one hundred seventeen million, one hundred twenty-one thousand, nine hundred seventy-five".