420026213 has 2 divisors, whose sum is σ = 420026214. Its totient is φ = 420026212.

The previous prime is 420026197. The next prime is 420026221. The reversal of 420026213 is 312620024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358042084 + 61984129 = 18922^2 + 7873^2 .

It is a cyclic number.

It is not a de Polignac number, because 420026213 - 2⁴ = 420026197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420026413) 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, 210013106 + 210013107.

It is an arithmetic number, because the mean of its divisors is an integer number (210013107).

Almost surely, 2^420026213 is an apocalyptic number.

It is an amenable number.

420026213 is a deficient number, since it is larger than the sum of its proper divisors (1).

420026213 is an equidigital number, since it uses as much as digits as its factorization.

420026213 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 420026213 is about 20494.5410536562. The cubic root of 420026213 is about 748.9028182241.

Adding to 420026213 its reverse (312620024), we get a palindrome (732646237).

The spelling of 420026213 in words is "four hundred twenty million, twenty-six thousand, two hundred thirteen".