421734382271 has 2 divisors, whose sum is σ = 421734382272. Its totient is φ = 421734382270.

The previous prime is 421734382207. The next prime is 421734382283. The reversal of 421734382271 is 172283437124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421734382271 - 2⁶ = 421734382207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421734382571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210867191135 + 210867191136.

It is an arithmetic number, because the mean of its divisors is an integer number (210867191136).

Almost surely, 2^421734382271 is an apocalyptic number.

421734382271 is a deficient number, since it is larger than the sum of its proper divisors (1).

421734382271 is an equidigital number, since it uses as much as digits as its factorization.

421734382271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 44.

The spelling of 421734382271 in words is "four hundred twenty-one billion, seven hundred thirty-four million, three hundred eighty-two thousand, two hundred seventy-one".