127945239 has 4 divisors (see below), whose sum is σ = 170593656. Its totient is φ = 85296824.

The previous prime is 127945229. The next prime is 127945241. The reversal of 127945239 is 932549721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 127945239 - 2¹¹ = 127943191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127945239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127945219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21324204 + ... + 21324209.

It is an arithmetic number, because the mean of its divisors is an integer number (42648414).

Almost surely, 2^127945239 is an apocalyptic number.

127945239 is a deficient number, since it is larger than the sum of its proper divisors (42648417).

127945239 is an equidigital number, since it uses as much as digits as its factorization.

127945239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42648416.

The product of its digits is 136080, while the sum is 42.

The square root of 127945239 is about 11311.2881229328. The cubic root of 127945239 is about 503.8965403975.

The spelling of 127945239 in words is "one hundred twenty-seven million, nine hundred forty-five thousand, two hundred thirty-nine".