12004423 has 4 divisors (see below), whose sum is σ = 12061528. Its totient is φ = 11947320.

The previous prime is 12004417. The next prime is 12004427. The reversal of 12004423 is 32440021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32440021 = 857 ⋅37853.

It is a cyclic number.

It is not a de Polignac number, because 12004423 - 2⁹ = 12003911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12004397 and 12004406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28236 + ... + 28657.

It is an arithmetic number, because the mean of its divisors is an integer number (3015382).

Almost surely, 2^12004423 is an apocalyptic number.

12004423 is a deficient number, since it is larger than the sum of its proper divisors (57105).

12004423 is an equidigital number, since it uses as much as digits as its factorization.

12004423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57104.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12004423 is about 3464.7399613824. The cubic root of 12004423 is about 228.9709732283.

Adding to 12004423 its reverse (32440021), we get a palindrome (44444444).

The spelling of 12004423 in words is "twelve million, four thousand, four hundred twenty-three".