1271125488 has 80 divisors (see below), whose sum is σ = 3416067072. Its totient is φ = 406848000.

The previous prime is 1271125483. The next prime is 1271125543. The reversal of 1271125488 is 8845211721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271125483) 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 15 ways as a sum of consecutive naturals, for example, 191668 + ... + 198188.

Almost surely, 2^1271125488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271125488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708033536).

1271125488 is an abundant number, since it is smaller than the sum of its proper divisors (2144941584).

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

1271125488 is a wasteful number, since it uses less digits than its factorization.

1271125488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694 (or 6688 counting only the distinct ones).

The product of its digits is 35840, while the sum is 39.

The square root of 1271125488 is about 35652.8468428539. The cubic root of 1271125488 is about 1083.2519405095.

The spelling of 1271125488 in words is "one billion, two hundred seventy-one million, one hundred twenty-five thousand, four hundred eighty-eight".