3124903921 has 8 divisors (see below), whose sum is σ = 3153835080. Its totient is φ = 3095995392.

The previous prime is 3124903889. The next prime is 3124903927. The reversal of 3124903921 is 1293094213.

It can be written as a sum of positive squares in 4 ways, for example, as 245079025 + 2879824896 = 15655^2 + 53664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3124903921 - 2⁵ = 3124903889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3124903927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411285 + ... + 418813.

It is an arithmetic number, because the mean of its divisors is an integer number (394229385).

Almost surely, 2^3124903921 is an apocalyptic number.

It is an amenable number.

3124903921 is a deficient number, since it is larger than the sum of its proper divisors (28931159).

3124903921 is a wasteful number, since it uses less digits than its factorization.

3124903921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 3124903921 is about 55900.8400741885. The cubic root of 3124903921 is about 1461.9938856622.

It can be divided in two parts, 3124903 and 921, that added together give a square (3125824 = 1768²).

The spelling of 3124903921 in words is "three billion, one hundred twenty-four million, nine hundred three thousand, nine hundred twenty-one".