1271870253 has 24 divisors (see below), whose sum is σ = 1864020600. Its totient is φ = 835574784.

The previous prime is 1271870233. The next prime is 1271870267. The reversal of 1271870253 is 3520781721.

It can be written as a sum of positive squares in 4 ways, for example, as 4652649 + 1267217604 = 2157^2 + 35598^2 .

It is not a de Polignac number, because 1271870253 - 2⁸ = 1271869997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271870233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251413 + ... + 256421.

It is an arithmetic number, because the mean of its divisors is an integer number (77667525).

Almost surely, 2^1271870253 is an apocalyptic number.

It is an amenable number.

1271870253 is a deficient number, since it is larger than the sum of its proper divisors (592150347).

1271870253 is a wasteful number, since it uses less digits than its factorization.

1271870253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421 (or 5418 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1271870253 is about 35663.2899912501. The cubic root of 1271870253 is about 1083.4634618807.

The spelling of 1271870253 in words is "one billion, two hundred seventy-one million, eight hundred seventy thousand, two hundred fifty-three".