12003423 has 4 divisors (see below), whose sum is σ = 16004568. Its totient is φ = 8002280.

The previous prime is 12003391. The next prime is 12003427. The reversal of 12003423 is 32430021.

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 12003423 - 2⁵ = 12003391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003427) 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, 2000568 + ... + 2000573.

It is an arithmetic number, because the mean of its divisors is an integer number (4001142).

Almost surely, 2^12003423 is an apocalyptic number.

12003423 is a deficient number, since it is larger than the sum of its proper divisors (4001145).

12003423 is an equidigital number, since it uses as much as digits as its factorization.

12003423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001144.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 12003423 is about 3464.5956474024. The cubic root of 12003423 is about 228.9646150903.

Adding to 12003423 its reverse (32430021), we get a palindrome (44433444).

The spelling of 12003423 in words is "twelve million, three thousand, four hundred twenty-three".