1272872012 has 12 divisors (see below), whose sum is σ = 2232299160. Its totient is φ = 635072256.

The previous prime is 1272871979. The next prime is 1272872021. The reversal of 1272872012 is 2102782721.

It is a self number, because there is not a number n which added to its sum of digits gives 1272872012.

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, 338837 + ... + 342572.

It is an arithmetic number, because the mean of its divisors is an integer number (186024930).

Almost surely, 2^1272872012 is an apocalyptic number.

It is an amenable number.

1272872012 is a deficient number, since it is larger than the sum of its proper divisors (959427148).

1272872012 is a wasteful number, since it uses less digits than its factorization.

1272872012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681880 (or 681878 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 1272872012 is about 35677.3319069686. The cubic root of 1272872012 is about 1083.7478421574.

The spelling of 1272872012 in words is "one billion, two hundred seventy-two million, eight hundred seventy-two thousand, twelve".