1321420304 has 20 divisors (see below), whose sum is σ = 2595326076. Its totient is φ = 651658752.

The previous prime is 1321420279. The next prime is 1321420339. The reversal of 1321420304 is 4030241231.

It can be written as a sum of positive squares in 2 ways, for example, as 1009968400 + 311451904 = 31780^2 + 17648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564509 + ... + 566844.

Almost surely, 2^1321420304 is an apocalyptic number.

It is an amenable number.

1321420304 is a deficient number, since it is larger than the sum of its proper divisors (1273905772).

1321420304 is a wasteful number, since it uses less digits than its factorization.

1321420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131434 (or 1131428 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1321420304 is about 36351.3452845971. The cubic root of 1321420304 is about 1097.3546084835.

Adding to 1321420304 its reverse (4030241231), we get a palindrome (5351661535).

The spelling of 1321420304 in words is "one billion, three hundred twenty-one million, four hundred twenty thousand, three hundred four".