423921534423 has 4 divisors (see below), whose sum is σ = 565228712568. Its totient is φ = 282614356280.

The previous prime is 423921534397. The next prime is 423921534437. The reversal of 423921534423 is 324435129324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423921534423 - 2⁶ = 423921534359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423921534473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70653589068 + ... + 70653589073.

It is an arithmetic number, because the mean of its divisors is an integer number (141307178142).

Almost surely, 2^423921534423 is an apocalyptic number.

423921534423 is a deficient number, since it is larger than the sum of its proper divisors (141307178145).

423921534423 is a wasteful number, since it uses less digits than its factorization.

423921534423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141307178144.

The product of its digits is 622080, while the sum is 42.

The spelling of 423921534423 in words is "four hundred twenty-three billion, nine hundred twenty-one million, five hundred thirty-four thousand, four hundred twenty-three".