120430421 has 2 divisors, whose sum is σ = 120430422. Its totient is φ = 120430420.

The previous prime is 120430411. The next prime is 120430433. The reversal of 120430421 is 124034021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 5640625 = 10714^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 120430421 - 2⁶ = 120430357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120430421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120430411) 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 as a sum of consecutive naturals, namely, 60215210 + 60215211.

It is an arithmetic number, because the mean of its divisors is an integer number (60215211).

Almost surely, 2^120430421 is an apocalyptic number.

It is an amenable number.

120430421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120430421 is an equidigital number, since it uses as much as digits as its factorization.

120430421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120430421 is about 10974.0795058173. The cubic root of 120430421 is about 493.8314386632.

Adding to 120430421 its reverse (124034021), we get a palindrome (244464442).

The spelling of 120430421 in words is "one hundred twenty million, four hundred thirty thousand, four hundred twenty-one".