1274840253 has 6 divisors (see below), whose sum is σ = 1841435934. Its totient is φ = 849893496.

The previous prime is 1274840239. The next prime is 1274840257. The reversal of 1274840253 is 3520484721.

It is a happy number.

1274840253 is a `hidden beast` number, since 127 + 484 + 0 + 2 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 823575204 + 451265049 = 28698^2 + 21243^2 .

It is not a de Polignac number, because 1274840253 - 2¹⁶ = 1274774717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274840257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70824450 + ... + 70824467.

It is an arithmetic number, because the mean of its divisors is an integer number (306905989).

Almost surely, 2^1274840253 is an apocalyptic number.

It is an amenable number.

1274840253 is a deficient number, since it is larger than the sum of its proper divisors (566595681).

1274840253 is a wasteful number, since it uses less digits than its factorization.

1274840253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141648923 (or 141648920 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 1274840253 is about 35704.9051672176. The cubic root of 1274840253 is about 1084.3061539650.

The spelling of 1274840253 in words is "one billion, two hundred seventy-four million, eight hundred forty thousand, two hundred fifty-three".