127117992 has 32 divisors (see below), whose sum is σ = 318329280. Its totient is φ = 42301440.

The previous prime is 127117979. The next prime is 127118021. The reversal of 127117992 is 299711721.

It is a super-2 number, since 2×127117992² = 32317967780224128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 127117992.

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, 11253 + ... + 19515.

It is an arithmetic number, because the mean of its divisors is an integer number (9947790).

Almost surely, 2^127117992 is an apocalyptic number.

127117992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

127117992 is an abundant number, since it is smaller than the sum of its proper divisors (191211288).

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

127117992 is a wasteful number, since it uses less digits than its factorization.

127117992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8913 (or 8909 counting only the distinct ones).

The product of its digits is 15876, while the sum is 39.

The square root of 127117992 is about 11274.6615026794. The cubic root of 127117992 is about 502.8081879672.

The spelling of 127117992 in words is "one hundred twenty-seven million, one hundred seventeen thousand, nine hundred ninety-two".