1315266421 has 16 divisors (see below), whose sum is σ = 1599609600. Its totient is φ = 1055704320.

The previous prime is 1315266349. The next prime is 1315266427. The reversal of 1315266421 is 1246625131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1315266421 - 2⁹ = 1315265909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315266427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4090 + ... + 51451.

It is an arithmetic number, because the mean of its divisors is an integer number (99975600).

Almost surely, 2^1315266421 is an apocalyptic number.

It is an amenable number.

1315266421 is a deficient number, since it is larger than the sum of its proper divisors (284343179).

1315266421 is a wasteful number, since it uses less digits than its factorization.

1315266421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55764.

The product of its digits is 8640, while the sum is 31.

The square root of 1315266421 is about 36266.6020051507. The cubic root of 1315266421 is about 1095.6484891917.

The spelling of 1315266421 in words is "one billion, three hundred fifteen million, two hundred sixty-six thousand, four hundred twenty-one".