1272120696 has 96 divisors (see below), whose sum is σ = 4295491200. Its totient is φ = 330419520.

The previous prime is 1272120691. The next prime is 1272120713. The reversal of 1272120696 is 6960212721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1272120696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272120691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109186 + ... + 120273.

It is an arithmetic number, because the mean of its divisors is an integer number (44744700).

Almost surely, 2^1272120696 is an apocalyptic number.

It is an amenable number.

1272120696 is an abundant number, since it is smaller than the sum of its proper divisors (3023370504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272120696 is a wasteful number, since it uses less digits than its factorization.

1272120696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229489 (or 229482 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1272120696 is about 35666.8010340148. The cubic root of 1272120696 is about 1083.5345718677.

The spelling of 1272120696 in words is "one billion, two hundred seventy-two million, one hundred twenty thousand, six hundred ninety-six".