1270256939 has 8 divisors (see below), whose sum is σ = 1481349600. Its totient is φ = 1088791368.

The previous prime is 1270256929. The next prime is 1270256941. The reversal of 1270256939 is 9396520721.

It is a de Polignac number, because none of the positive numbers 2^k-1270256939 is a prime.

It is a super-2 number, since 2×1270256939² = 3227105382155299442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1270256939.

It is not an unprimeable number, because it can be changed into a prime (1270256929) by changing a digit.

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, 1851344 + ... + 1852029.

It is an arithmetic number, because the mean of its divisors is an integer number (185168700).

Almost surely, 2^1270256939 is an apocalyptic number.

1270256939 is a deficient number, since it is larger than the sum of its proper divisors (211092661).

1270256939 is an frugal number, since it uses more digits than its factorization.

1270256939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703394 (or 3703380 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 1270256939 is about 35640.6641211973. The cubic root of 1270256939 is about 1083.0051587472.

The spelling of 1270256939 in words is "one billion, two hundred seventy million, two hundred fifty-six thousand, nine hundred thirty-nine".