422430641 has 2 divisors, whose sum is σ = 422430642. Its totient is φ = 422430640.

The previous prime is 422430611. The next prime is 422430649. The reversal of 422430641 is 146034224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235315600 + 187115041 = 15340^2 + 13679^2 .

It is a cyclic number.

It is not a de Polignac number, because 422430641 - 2⁶ = 422430577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422430641.

It is not a weakly prime, because it can be changed into another prime (422430649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211215320 + 211215321.

It is an arithmetic number, because the mean of its divisors is an integer number (211215321).

Almost surely, 2^422430641 is an apocalyptic number.

It is an amenable number.

422430641 is a deficient number, since it is larger than the sum of its proper divisors (1).

422430641 is an equidigital number, since it uses as much as digits as its factorization.

422430641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 422430641 is about 20553.1175494133. The cubic root of 422430641 is about 750.3291242892.

Adding to 422430641 its reverse (146034224), we get a palindrome (568464865).

The spelling of 422430641 in words is "four hundred twenty-two million, four hundred thirty thousand, six hundred forty-one".