1272165424 has 20 divisors (see below), whose sum is σ = 2465405944. Its totient is φ = 635931648.

The previous prime is 1272165407. The next prime is 1272165439. The reversal of 1272165424 is 4245612721.

It is a self number, because there is not a number n which added to its sum of digits gives 1272165424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95119 + ... + 107665.

Almost surely, 2^1272165424 is an apocalyptic number.

It is an amenable number.

1272165424 is a deficient number, since it is larger than the sum of its proper divisors (1193240520).

1272165424 is a wasteful number, since it uses less digits than its factorization.

1272165424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18892 (or 18886 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 1272165424 is about 35667.4280541785. The cubic root of 1272165424 is about 1083.5472708111.

The spelling of 1272165424 in words is "one billion, two hundred seventy-two million, one hundred sixty-five thousand, four hundred twenty-four".