421070201 has 2 divisors, whose sum is σ = 421070202. Its totient is φ = 421070200.

The previous prime is 421070189. The next prime is 421070261. The reversal of 421070201 is 102070124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411116176 + 9954025 = 20276^2 + 3155^2 .

It is a cyclic number.

It is not a de Polignac number, because 421070201 - 2¹⁰ = 421069177 is a prime.

It is a super-2 number, since 2×421070201² = 354600228340360802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421070201.

It is not a weakly prime, because it can be changed into another prime (421070261) 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, 210535100 + 210535101.

It is an arithmetic number, because the mean of its divisors is an integer number (210535101).

Almost surely, 2^421070201 is an apocalyptic number.

It is an amenable number.

421070201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421070201 is an equidigital number, since it uses as much as digits as its factorization.

421070201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 421070201 is about 20519.9951510716. The cubic root of 421070201 is about 749.5227784846.

The spelling of 421070201 in words is "four hundred twenty-one million, seventy thousand, two hundred one".