421841293 has 2 divisors, whose sum is σ = 421841294. Its totient is φ = 421841292.

The previous prime is 421841269. The next prime is 421841311. The reversal of 421841293 is 392148124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290463849 + 131377444 = 17043^2 + 11462^2 .

It is a cyclic number.

It is not a de Polignac number, because 421841293 - 2⁹ = 421840781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421841243) 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, 210920646 + 210920647.

It is an arithmetic number, because the mean of its divisors is an integer number (210920647).

Almost surely, 2^421841293 is an apocalyptic number.

It is an amenable number.

421841293 is a deficient number, since it is larger than the sum of its proper divisors (1).

421841293 is an equidigital number, since it uses as much as digits as its factorization.

421841293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 421841293 is about 20538.7753529756. The cubic root of 421841293 is about 749.9800249495.

The spelling of 421841293 in words is "four hundred twenty-one million, eight hundred forty-one thousand, two hundred ninety-three".