12423423 has 8 divisors (see below), whose sum is σ = 16615936. Its totient is φ = 8256600.

The previous prime is 12423409. The next prime is 12423457. The reversal of 12423423 is 32432421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12423423 - 2⁴ = 12423407 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 12423423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5263 + ... + 7248.

It is an arithmetic number, because the mean of its divisors is an integer number (2076992).

Almost surely, 2^12423423 is an apocalyptic number.

12423423 is a deficient number, since it is larger than the sum of its proper divisors (4192513).

12423423 is a wasteful number, since it uses less digits than its factorization.

12423423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845.

The product of its digits is 1152, while the sum is 21.

The square root of 12423423 is about 3524.6876457354. The cubic root of 12423423 is about 231.6045520089.

Adding to 12423423 its reverse (32432421), we get a palindrome (44855844).

The spelling of 12423423 in words is "twelve million, four hundred twenty-three thousand, four hundred twenty-three".