421046201 has 2 divisors, whose sum is σ = 421046202. Its totient is φ = 421046200.

The previous prime is 421046149. The next prime is 421046203. The reversal of 421046201 is 102640124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307090576 + 113955625 = 17524^2 + 10675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421046201 is a prime.

Together with 421046203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421046203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210523100 + 210523101.

It is an arithmetic number, because the mean of its divisors is an integer number (210523101).

Almost surely, 2^421046201 is an apocalyptic number.

It is an amenable number.

421046201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421046201 is an equidigital number, since it uses as much as digits as its factorization.

421046201 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 20.

The square root of 421046201 is about 20519.4103472785. The cubic root of 421046201 is about 749.5085378755.

Adding to 421046201 its reverse (102640124), we get a palindrome (523686325).

The spelling of 421046201 in words is "four hundred twenty-one million, forty-six thousand, two hundred one".