421542588423 has 16 divisors (see below), whose sum is σ = 613379158272. Its totient is φ = 255386064000.

The previous prime is 421542588409. The next prime is 421542588443. The reversal of 421542588423 is 324885245124.

It is not a de Polignac number, because 421542588423 - 2²⁰ = 421541539847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421542588443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2266498 + ... + 2445423.

It is an arithmetic number, because the mean of its divisors is an integer number (38336197392).

Almost surely, 2^421542588423 is an apocalyptic number.

421542588423 is a deficient number, since it is larger than the sum of its proper divisors (191836569849).

421542588423 is a wasteful number, since it uses less digits than its factorization.

421542588423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714646.

The product of its digits is 2457600, while the sum is 48.

The spelling of 421542588423 in words is "four hundred twenty-one billion, five hundred forty-two million, five hundred eighty-eight thousand, four hundred twenty-three".