1271274960 has 160 divisors (see below), whose sum is σ = 4252227840. Its totient is φ = 312991744.

The previous prime is 1271274937. The next prime is 1271274989. The reversal of 1271274960 is 694721721.

It is a super-2 number, since 2×1271274960² = 3232280047846003200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213301 + ... + 219179.

It is an arithmetic number, because the mean of its divisors is an integer number (26576424).

Almost surely, 2^1271274960 is an apocalyptic number.

1271274960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271274960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126113920).

1271274960 is an abundant number, since it is smaller than the sum of its proper divisors (2980952880).

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

1271274960 is a wasteful number, since it uses less digits than its factorization.

1271274960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965 (or 5959 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 1271274960 is about 35654.9429953267. The cubic root of 1271274960 is about 1083.2943988111.

The spelling of 1271274960 in words is "one billion, two hundred seventy-one million, two hundred seventy-four thousand, nine hundred sixty".