127136979 has 16 divisors (see below), whose sum is σ = 188526240. Its totient is φ = 84679200.

The previous prime is 127136953. The next prime is 127136981. The reversal of 127136979 is 979631721.

It is not a de Polignac number, because 127136979 - 2⁷ = 127136851 is a prime.

It is a super-2 number, since 2×127136979² = 32327622858492882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127136909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50089 + ... + 52565.

It is an arithmetic number, because the mean of its divisors is an integer number (11782890).

Almost surely, 2^127136979 is an apocalyptic number.

127136979 is a deficient number, since it is larger than the sum of its proper divisors (61389261).

127136979 is a wasteful number, since it uses less digits than its factorization.

127136979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387 (or 4381 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 127136979 is about 11275.5034920841. The cubic root of 127136979 is about 502.8332207304.

The spelling of 127136979 in words is "one hundred twenty-seven million, one hundred thirty-six thousand, nine hundred seventy-nine".