421243301 has 2 divisors, whose sum is σ = 421243302. Its totient is φ = 421243300.

The previous prime is 421243297. The next prime is 421243309. The reversal of 421243301 is 103342124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360012676 + 61230625 = 18974^2 + 7825^2 .

It is a cyclic number.

It is not a de Polignac number, because 421243301 - 2² = 421243297 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421243309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210621650 + 210621651.

It is an arithmetic number, because the mean of its divisors is an integer number (210621651).

Almost surely, 2^421243301 is an apocalyptic number.

It is an amenable number.

421243301 is a deficient number, since it is larger than the sum of its proper divisors (1).

421243301 is an equidigital number, since it uses as much as digits as its factorization.

421243301 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 20.

The square root of 421243301 is about 20524.2125549313. The cubic root of 421243301 is about 749.6254728555.

Adding to 421243301 its reverse (103342124), we get a palindrome (524585425).

The spelling of 421243301 in words is "four hundred twenty-one million, two hundred forty-three thousand, three hundred one".