127998727 has 2 divisors, whose sum is σ = 127998728. Its totient is φ = 127998726.

The previous prime is 127998709. The next prime is 127998737. The reversal of 127998727 is 727899721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127998727 - 2²³ = 119610119 is a prime.

It is a super-2 number, since 2×127998727² = 32767348227241058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127998737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63999363 + 63999364.

It is an arithmetic number, because the mean of its divisors is an integer number (63999364).

Almost surely, 2^127998727 is an apocalyptic number.

127998727 is a deficient number, since it is larger than the sum of its proper divisors (1).

127998727 is an equidigital number, since it uses as much as digits as its factorization.

127998727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 52.

The square root of 127998727 is about 11313.6522396616. The cubic root of 127998727 is about 503.9667492446.

The spelling of 127998727 in words is "one hundred twenty-seven million, nine hundred ninety-eight thousand, seven hundred twenty-seven".