420020201 has 2 divisors, whose sum is σ = 420020202. Its totient is φ = 420020200.

The previous prime is 420020171. The next prime is 420020231. The reversal of 420020201 is 102020024.

It is a balanced prime because it is at equal distance from previous prime (420020171) and next prime (420020231).

It can be written as a sum of positive squares in only one way, i.e., 402042601 + 17977600 = 20051^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 420020201 - 2²² = 415825897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (420020231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210010100 + 210010101.

It is an arithmetic number, because the mean of its divisors is an integer number (210010101).

Almost surely, 2^420020201 is an apocalyptic number.

It is an amenable number.

420020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

420020201 is an equidigital number, since it uses as much as digits as its factorization.

420020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 420020201 is about 20494.3943799274. The cubic root of 420020201 is about 748.8992450937.

Adding to 420020201 its reverse (102020024), we get a palindrome (522040225).

The spelling of 420020201 in words is "four hundred twenty million, twenty thousand, two hundred one".