127125909 has 16 divisors (see below), whose sum is σ = 190454400. Its totient is φ = 83796768.

The previous prime is 127125877. The next prime is 127125913. The reversal of 127125909 is 909521721.

It is not a de Polignac number, because 127125909 - 2⁵ = 127125877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127125919) 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, 24049 + ... + 28854.

It is an arithmetic number, because the mean of its divisors is an integer number (11903400).

Almost surely, 2^127125909 is an apocalyptic number.

It is an amenable number.

127125909 is a deficient number, since it is larger than the sum of its proper divisors (63328491).

127125909 is an equidigital number, since it uses as much as digits as its factorization.

127125909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53001 (or 52995 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 127125909 is about 11275.0125942280. The cubic root of 127125909 is about 502.8186261690.

The spelling of 127125909 in words is "one hundred twenty-seven million, one hundred twenty-five thousand, nine hundred nine".