1271133960 has 32 divisors (see below), whose sum is σ = 3813402240. Its totient is φ = 338969024.

The previous prime is 1271133959. The next prime is 1271133973. The reversal of 1271133960 is 693311721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5296272 + ... + 5296511.

It is an arithmetic number, because the mean of its divisors is an integer number (119168820).

Almost surely, 2^1271133960 is an apocalyptic number.

1271133960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271133960 is an abundant number, since it is smaller than the sum of its proper divisors (2542268280).

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

1271133960 is a wasteful number, since it uses less digits than its factorization.

1271133960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10592797 (or 10592793 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1271133960 is about 35652.9656550475. The cubic root of 1271133960 is about 1083.2543471143.

The spelling of 1271133960 in words is "one billion, two hundred seventy-one million, one hundred thirty-three thousand, nine hundred sixty".