127428279 has 8 divisors (see below), whose sum is σ = 185350272. Its totient is φ = 77229240.

The previous prime is 127428263. The next prime is 127428281. The reversal of 127428279 is 972824721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127428279 - 2⁴ = 127428263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127428279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127428239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930699 + ... + 1930764.

It is an arithmetic number, because the mean of its divisors is an integer number (23168784).

Almost surely, 2^127428279 is an apocalyptic number.

127428279 is a deficient number, since it is larger than the sum of its proper divisors (57921993).

127428279 is a wasteful number, since it uses less digits than its factorization.

127428279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861477.

The product of its digits is 112896, while the sum is 42.

The square root of 127428279 is about 11288.4134846310. The cubic root of 127428279 is about 503.2169632392.

The spelling of 127428279 in words is "one hundred twenty-seven million, four hundred twenty-eight thousand, two hundred seventy-nine".