421324201 has 2 divisors, whose sum is σ = 421324202. Its totient is φ = 421324200.

The previous prime is 421324177. The next prime is 421324219. The reversal of 421324201 is 102423124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411116176 + 10208025 = 20276^2 + 3195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421324201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421324231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210662100 + 210662101.

It is an arithmetic number, because the mean of its divisors is an integer number (210662101).

Almost surely, 2^421324201 is an apocalyptic number.

It is an amenable number.

421324201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421324201 is an equidigital number, since it uses as much as digits as its factorization.

421324201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421324201 is about 20526.1833032836. The cubic root of 421324201 is about 749.6734584407.

Adding to 421324201 its reverse (102423124), we get a palindrome (523747325).

The spelling of 421324201 in words is "four hundred twenty-one million, three hundred twenty-four thousand, two hundred one".