1296166127 has 6 divisors (see below), whose sum is σ = 1352701368. Its totient is φ = 1239645924.

The previous prime is 1296166093. The next prime is 1296166133. The reversal of 1296166127 is 7216616921.

It is not a de Polignac number, because 1296166127 - 2¹² = 1296162031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296166427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168908 + ... + 176414.

It is an arithmetic number, because the mean of its divisors is an integer number (225450228).

Almost surely, 2^1296166127 is an apocalyptic number.

1296166127 is a deficient number, since it is larger than the sum of its proper divisors (56535241).

1296166127 is an frugal number, since it uses more digits than its factorization.

1296166127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037 (or 7530 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1296166127 is about 36002.3072455086. The cubic root of 1296166127 is about 1090.3189390164.

The spelling of 1296166127 in words is "one billion, two hundred ninety-six million, one hundred sixty-six thousand, one hundred twenty-seven".