1257462113 has 4 divisors (see below), whose sum is σ = 1278076308. Its totient is φ = 1236847920.

The previous prime is 1257462109. The next prime is 1257462121. The reversal of 1257462113 is 3112647521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 629859409 + 627602704 = 25097^2 + 25052^2 .

It is a cyclic number.

It is not a de Polignac number, because 1257462113 - 2² = 1257462109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1257462113.

It is not an unprimeable number, because it can be changed into a prime (1257462133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10307006 + ... + 10307127.

It is an arithmetic number, because the mean of its divisors is an integer number (319519077).

Almost surely, 2^1257462113 is an apocalyptic number.

It is an amenable number.

1257462113 is a deficient number, since it is larger than the sum of its proper divisors (20614195).

1257462113 is an equidigital number, since it uses as much as digits as its factorization.

1257462113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614194.

The product of its digits is 10080, while the sum is 32.

The square root of 1257462113 is about 35460.7122460900. The cubic root of 1257462113 is about 1079.3566450080.

The spelling of 1257462113 in words is "one billion, two hundred fifty-seven million, four hundred sixty-two thousand, one hundred thirteen".