127715129 has 2 divisors, whose sum is σ = 127715130. Its totient is φ = 127715128.

The previous prime is 127715069. The next prime is 127715141. The reversal of 127715129 is 921517721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74425129 + 53290000 = 8627^2 + 7300^2 .

It is an emirp because it is prime and its reverse (921517721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127715129 - 2²⁴ = 110937913 is a prime.

It is a super-2 number, since 2×127715129² = 32622308350973282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127715149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63857564 + 63857565.

It is an arithmetic number, because the mean of its divisors is an integer number (63857565).

Almost surely, 2^127715129 is an apocalyptic number.

It is an amenable number.

127715129 is a deficient number, since it is larger than the sum of its proper divisors (1).

127715129 is an equidigital number, since it uses as much as digits as its factorization.

127715129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 35.

The square root of 127715129 is about 11301.1118479555. Note that the first 3 decimals coincide. The cubic root of 127715129 is about 503.5942724988.

The spelling of 127715129 in words is "one hundred twenty-seven million, seven hundred fifteen thousand, one hundred twenty-nine".