1271443459 has 32 divisors (see below), whose sum is σ = 1522160640. Its totient is φ = 1046822400.

The previous prime is 1271443423. The next prime is 1271443477. The reversal of 1271443459 is 9543441721.

It is not a de Polignac number, because 1271443459 - 2¹³ = 1271435267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271443499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2722344 + ... + 2722810.

It is an arithmetic number, because the mean of its divisors is an integer number (47567520).

Almost surely, 2^1271443459 is an apocalyptic number.

1271443459 is a deficient number, since it is larger than the sum of its proper divisors (250717181).

1271443459 is a wasteful number, since it uses less digits than its factorization.

1271443459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811.

The product of its digits is 120960, while the sum is 40.

The square root of 1271443459 is about 35657.3058292407. The cubic root of 1271443459 is about 1083.3422578410.

The spelling of 1271443459 in words is "one billion, two hundred seventy-one million, four hundred forty-three thousand, four hundred fifty-nine".