423123143423 has 4 divisors (see below), whose sum is σ = 423504680280. Its totient is φ = 422741606568.

The previous prime is 423123143411. The next prime is 423123143437. The reversal of 423123143423 is 324341321324.

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 423123143423 - 2¹⁰ = 423123142399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423123143423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423123143483) 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, 190766765 + ... + 190768982.

It is an arithmetic number, because the mean of its divisors is an integer number (105876170070).

Almost surely, 2^423123143423 is an apocalyptic number.

423123143423 is a deficient number, since it is larger than the sum of its proper divisors (381536857).

423123143423 is a wasteful number, since it uses less digits than its factorization.

423123143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381536856.

The product of its digits is 41472, while the sum is 32.

Adding to 423123143423 its reverse (324341321324), we get a palindrome (747464464747).

The spelling of 423123143423 in words is "four hundred twenty-three billion, one hundred twenty-three million, one hundred forty-three thousand, four hundred twenty-three".