127264129 has 4 divisors (see below), whose sum is σ = 132797376. Its totient is φ = 121730884.

The previous prime is 127264079. The next prime is 127264153. The reversal of 127264129 is 921462721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921462721 = 73 ⋅12622777.

It is a cyclic number.

It is not a de Polignac number, because 127264129 - 2⁷ = 127264001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127264094 and 127264103.

It is not an unprimeable number, because it can be changed into a prime (127264199) 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, 2766589 + ... + 2766634.

It is an arithmetic number, because the mean of its divisors is an integer number (33199344).

Almost surely, 2^127264129 is an apocalyptic number.

It is an amenable number.

127264129 is a deficient number, since it is larger than the sum of its proper divisors (5533247).

127264129 is an equidigital number, since it uses as much as digits as its factorization.

127264129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533246.

The product of its digits is 12096, while the sum is 34.

The square root of 127264129 is about 11281.1404122101. The cubic root of 127264129 is about 503.0007931194. Note that the first 3 decimals are identical.

The spelling of 127264129 in words is "one hundred twenty-seven million, two hundred sixty-four thousand, one hundred twenty-nine".