3125944421 has 4 divisors (see below), whose sum is σ = 3261855072. Its totient is φ = 2990033772.

The previous prime is 3125944417. The next prime is 3125944433. The reversal of 3125944421 is 1244495213.

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 3125944421 - 2² = 3125944417 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 (3125944441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67955291 + ... + 67955336.

It is an arithmetic number, because the mean of its divisors is an integer number (815463768).

Almost surely, 2^3125944421 is an apocalyptic number.

It is an amenable number.

3125944421 is a deficient number, since it is larger than the sum of its proper divisors (135910651).

3125944421 is a wasteful number, since it uses less digits than its factorization.

3125944421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135910650.

The product of its digits is 34560, while the sum is 35.

The square root of 3125944421 is about 55910.1459575988. The cubic root of 3125944421 is about 1462.1561344725.

The spelling of 3125944421 in words is "three billion, one hundred twenty-five million, nine hundred forty-four thousand, four hundred twenty-one".