1272431675 has 12 divisors (see below), whose sum is σ = 1583399400. Its totient is φ = 1014342720.

The previous prime is 1272431621. The next prime is 1272431687. The reversal of 1272431675 is 5761342721.

It is a de Polignac number, because none of the positive numbers 2^k-1272431675 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82850 + ... + 96999.

It is an arithmetic number, because the mean of its divisors is an integer number (131949950).

Almost surely, 2^1272431675 is an apocalyptic number.

1272431675 is a deficient number, since it is larger than the sum of its proper divisors (310967725).

1272431675 is a wasteful number, since it uses less digits than its factorization.

1272431675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180142 (or 180137 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 1272431675 is about 35671.1602698875. The cubic root of 1272431675 is about 1083.6228572653.

The spelling of 1272431675 in words is "one billion, two hundred seventy-two million, four hundred thirty-one thousand, six hundred seventy-five".