120304321 has 4 divisors (see below), whose sum is σ = 120329044. Its totient is φ = 120279600.

The previous prime is 120304319. The next prime is 120304343. The reversal of 120304321 is 123403021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106316721 + 13987600 = 10311^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 120304321 - 2¹ = 120304319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120304295 and 120304304.

It is not an unprimeable number, because it can be changed into a prime (120304381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (30082261).

Almost surely, 2^120304321 is an apocalyptic number.

It is an amenable number.

120304321 is a deficient number, since it is larger than the sum of its proper divisors (24723).

120304321 is an equidigital number, since it uses as much as digits as its factorization.

120304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24722.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120304321 is about 10968.3326444816. The cubic root of 120304321 is about 493.6590185190.

Adding to 120304321 its reverse (123403021), we get a palindrome (243707342).

The spelling of 120304321 in words is "one hundred twenty million, three hundred four thousand, three hundred twenty-one".