1321424875 has 64 divisors (see below), whose sum is σ = 1853953920. Its totient is φ = 935424000.

The previous prime is 1321424861. The next prime is 1321424887. The reversal of 1321424875 is 5784241231.

It is not a de Polignac number, because 1321424875 - 2¹¹ = 1321422827 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2526364 + ... + 2526886.

It is an arithmetic number, because the mean of its divisors is an integer number (28968030).

Almost surely, 2^1321424875 is an apocalyptic number.

1321424875 is a deficient number, since it is larger than the sum of its proper divisors (532529045).

1321424875 is a wasteful number, since it uses less digits than its factorization.

1321424875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 615 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 1321424875 is about 36351.4081570439. The cubic root of 1321424875 is about 1097.3558737892.

The spelling of 1321424875 in words is "one billion, three hundred twenty-one million, four hundred twenty-four thousand, eight hundred seventy-five".