1262972013 has 4 divisors (see below), whose sum is σ = 1683962688. Its totient is φ = 841981340.

The previous prime is 1262971981. The next prime is 1262972017. The reversal of 1262972013 is 3102792621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1262972013 - 2⁵ = 1262971981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262972017) 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 3 ways as a sum of consecutive naturals, for example, 210495333 + ... + 210495338.

It is an arithmetic number, because the mean of its divisors is an integer number (420990672).

Almost surely, 2^1262972013 is an apocalyptic number.

It is an amenable number.

1262972013 is a deficient number, since it is larger than the sum of its proper divisors (420990675).

1262972013 is an equidigital number, since it uses as much as digits as its factorization.

1262972013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420990674.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1262972013 is about 35538.3175319260. The cubic root of 1262972013 is about 1080.9308427174.

The spelling of 1262972013 in words is "one billion, two hundred sixty-two million, nine hundred seventy-two thousand, thirteen".