420226801 has 2 divisors, whose sum is σ = 420226802. Its totient is φ = 420226800.

The previous prime is 420226783. The next prime is 420226817. The reversal of 420226801 is 108622024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403045776 + 17181025 = 20076^2 + 4145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420226801 is a prime.

It is not a weakly prime, because it can be changed into another prime (420236801) 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, 210113400 + 210113401.

It is an arithmetic number, because the mean of its divisors is an integer number (210113401).

Almost surely, 2^420226801 is an apocalyptic number.

It is an amenable number.

420226801 is a deficient number, since it is larger than the sum of its proper divisors (1).

420226801 is an equidigital number, since it uses as much as digits as its factorization.

420226801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 420226801 is about 20499.4341629226. The cubic root of 420226801 is about 749.0220147623.

Adding to 420226801 its reverse (108622024), we get a palindrome (528848825).

The spelling of 420226801 in words is "four hundred twenty million, two hundred twenty-six thousand, eight hundred one".