1272943012 has 24 divisors (see below), whose sum is σ = 2435076000. Its totient is φ = 577440960.

The previous prime is 1272943003. The next prime is 1272943043. The reversal of 1272943012 is 2103492721.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7033 + ... + 50944.

It is an arithmetic number, because the mean of its divisors is an integer number (101461500).

Almost surely, 2^1272943012 is an apocalyptic number.

It is an amenable number.

1272943012 is a deficient number, since it is larger than the sum of its proper divisors (1162132988).

1272943012 is a wasteful number, since it uses less digits than its factorization.

1272943012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58491 (or 58489 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1272943012 is about 35678.3269226571. The cubic root of 1272943012 is about 1083.7679920403.

The spelling of 1272943012 in words is "one billion, two hundred seventy-two million, nine hundred forty-three thousand, twelve".