430203421 has 2 divisors, whose sum is σ = 430203422. Its totient is φ = 430203420.

The previous prime is 430203407. The next prime is 430203457. The reversal of 430203421 is 124302034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286083396 + 144120025 = 16914^2 + 12005^2 .

It is a cyclic number.

It is not a de Polignac number, because 430203421 - 2²⁷ = 295985693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (430203401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215101710 + 215101711.

It is an arithmetic number, because the mean of its divisors is an integer number (215101711).

Almost surely, 2^430203421 is an apocalyptic number.

It is an amenable number.

430203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

430203421 is an equidigital number, since it uses as much as digits as its factorization.

430203421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 430203421 is about 20741.3456892266. The cubic root of 430203421 is about 754.9032351170.

Adding to 430203421 its reverse (124302034), we get a palindrome (554505455).

The spelling of 430203421 in words is "four hundred thirty million, two hundred three thousand, four hundred twenty-one".