1271212960 has 24 divisors (see below), whose sum is σ = 3003240996. Its totient is φ = 508485120.

The previous prime is 1271212951. The next prime is 1271212973. The reversal of 1271212960 is 692121721.

It can be written as a sum of positive squares in 2 ways, for example, as 1251178384 + 20034576 = 35372^2 + 4476^2 .

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, 3972381 + ... + 3972700.

Almost surely, 2^1271212960 is an apocalyptic number.

1271212960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271212960 is an abundant number, since it is smaller than the sum of its proper divisors (1732028036).

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

1271212960 is an equidigital number, since it uses as much as digits as its factorization.

1271212960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945096 (or 7945088 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1271212960 is about 35654.0735400599. The cubic root of 1271212960 is about 1083.2767877915.

The spelling of 1271212960 in words is "one billion, two hundred seventy-one million, two hundred twelve thousand, nine hundred sixty".