1272125377 has 16 divisors (see below), whose sum is σ = 1339752960. Its totient is φ = 1205582400.

The previous prime is 1272125363. The next prime is 1272125383. The reversal of 1272125377 is 7735212721.

It is a cyclic number.

It is not a de Polignac number, because 1272125377 - 2¹¹ = 1272123329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272125347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1793899 + ... + 1794607.

It is an arithmetic number, because the mean of its divisors is an integer number (83734560).

Almost surely, 2^1272125377 is an apocalyptic number.

It is an amenable number.

1272125377 is a deficient number, since it is larger than the sum of its proper divisors (67627583).

1272125377 is a wasteful number, since it uses less digits than its factorization.

1272125377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344.

The product of its digits is 41160, while the sum is 37.

The square root of 1272125377 is about 35666.8666552026. The cubic root of 1272125377 is about 1083.5359008871.

The spelling of 1272125377 in words is "one billion, two hundred seventy-two million, one hundred twenty-five thousand, three hundred seventy-seven".