3120402421 has 8 divisors (see below), whose sum is σ = 3135163320. Its totient is φ = 3105665472.

The previous prime is 3120402413. The next prime is 3120402463. The reversal of 3120402421 is 1242040213.

It can be written as a sum of positive squares in 4 ways, for example, as 1715202225 + 1405200196 = 41415^2 + 37486^2 .

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 3120402421 - 2³ = 3120402413 is a prime.

It is a super-2 number, since 2×3120402421² = 19473822537965322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120402491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288711 + ... + 299323.

It is an arithmetic number, because the mean of its divisors is an integer number (391895415).

Almost surely, 2^3120402421 is an apocalyptic number.

It is an amenable number.

3120402421 is a deficient number, since it is larger than the sum of its proper divisors (14760899).

3120402421 is a wasteful number, since it uses less digits than its factorization.

3120402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11975.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3120402421 is about 55860.5623047244. The cubic root of 3120402421 is about 1461.2915357357.

Adding to 3120402421 its reverse (1242040213), we get a palindrome (4362442634).

The spelling of 3120402421 in words is "three billion, one hundred twenty million, four hundred two thousand, four hundred twenty-one".