127391013 has 12 divisors (see below), whose sum is σ = 194833548. Its totient is φ = 79931520.

The previous prime is 127391003. The next prime is 127391021. The reversal of 127391013 is 310193721.

It can be written as a sum of positive squares in 2 ways, for example, as 39162564 + 88228449 = 6258^2 + 9393^2 .

It is not a de Polignac number, because 127391013 - 2¹⁰ = 127389989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127391003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416158 + ... + 416463.

It is an arithmetic number, because the mean of its divisors is an integer number (16236129).

Almost surely, 2^127391013 is an apocalyptic number.

It is an amenable number.

127391013 is a deficient number, since it is larger than the sum of its proper divisors (67442535).

127391013 is a wasteful number, since it uses less digits than its factorization.

127391013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832644 (or 832641 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 127391013 is about 11286.7627333970. The cubic root of 127391013 is about 503.1679037163.

The spelling of 127391013 in words is "one hundred twenty-seven million, three hundred ninety-one thousand, thirteen".