3120120421 has 8 divisors (see below), whose sum is σ = 3404772000. Its totient is φ = 2835636240.

The previous prime is 3120120401. The next prime is 3120120431. The reversal of 3120120421 is 1240210213.

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 3120120421 - 2⁵ = 3120120389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120120395 and 3120120404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120120401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146 + ... + 79003.

It is an arithmetic number, because the mean of its divisors is an integer number (425596500).

Almost surely, 2^3120120421 is an apocalyptic number.

It is an amenable number.

3120120421 is a deficient number, since it is larger than the sum of its proper divisors (284651579).

3120120421 is a wasteful number, since it uses less digits than its factorization.

3120120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83699.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3120120421 is about 55858.0381055404. The cubic root of 3120120421 is about 1461.2475139962.

Adding to 3120120421 its reverse (1240210213), we get a palindrome (4360330634).

The spelling of 3120120421 in words is "three billion, one hundred twenty million, one hundred twenty thousand, four hundred twenty-one".