120304021 has 2 divisors, whose sum is σ = 120304022. Its totient is φ = 120304020.

The previous prime is 120304001. The next prime is 120304069. The reversal of 120304021 is 120403021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62331025 + 57972996 = 7895^2 + 7614^2 .

It is a cyclic number.

It is not a de Polignac number, because 120304021 - 2⁷ = 120303893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120303992 and 120304010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120304001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60152010 + 60152011.

It is an arithmetic number, because the mean of its divisors is an integer number (60152011).

Almost surely, 2^120304021 is an apocalyptic number.

It is an amenable number.

120304021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120304021 is an equidigital number, since it uses as much as digits as its factorization.

120304021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120304021 is about 10968.3189687390. The cubic root of 120304021 is about 493.6586081768.

Adding to 120304021 its reverse (120403021), we get a palindrome (240707042).

The spelling of 120304021 in words is "one hundred twenty million, three hundred four thousand, twenty-one".