421254343223 has 16 divisors (see below), whose sum is σ = 481822342464. Its totient is φ = 360783694080.

The previous prime is 421254343217. The next prime is 421254343259. The reversal of 421254343223 is 322343452124.

It is a cyclic number.

It is not a de Polignac number, because 421254343223 - 2²⁶ = 421187234359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421254343723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75477293 + ... + 75482873.

It is an arithmetic number, because the mean of its divisors is an integer number (30113896404).

Almost surely, 2^421254343223 is an apocalyptic number.

421254343223 is a deficient number, since it is larger than the sum of its proper divisors (60567999241).

421254343223 is a wasteful number, since it uses less digits than its factorization.

421254343223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12362.

The product of its digits is 138240, while the sum is 35.

Adding to 421254343223 its reverse (322343452124), we get a palindrome (743597795347).

The spelling of 421254343223 in words is "four hundred twenty-one billion, two hundred fifty-four million, three hundred forty-three thousand, two hundred twenty-three".