1271214656 has 28 divisors (see below), whose sum is σ = 2529100860. Its totient is φ = 633960960.

The previous prime is 1271214619. The next prime is 1271214671. The reversal of 1271214656 is 6564121721.

It can be written as a sum of positive squares in 2 ways, for example, as 120648256 + 1150566400 = 10984^2 + 33920^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 635 + ... + 50426.

Almost surely, 2^1271214656 is an apocalyptic number.

1271214656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1271214656 is a deficient number, since it is larger than the sum of its proper divisors (1257886204).

1271214656 is an equidigital number, since it uses as much as digits as its factorization.

1271214656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51462 (or 51452 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 1271214656 is about 35654.0973241506. The cubic root of 1271214656 is about 1083.2772695458.

The spelling of 1271214656 in words is "one billion, two hundred seventy-one million, two hundred fourteen thousand, six hundred fifty-six".