12004047 has 36 divisors (see below), whose sum is σ = 19447792. Its totient is φ = 7128000.

The previous prime is 12004043. The next prime is 12004049. The reversal of 12004047 is 74040021.

It is a happy number.

It is not a de Polignac number, because 12004047 - 2² = 12004043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004043) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 79422 + ... + 79572.

Almost surely, 2^12004047 is an apocalyptic number.

12004047 is a deficient number, since it is larger than the sum of its proper divisors (7443745).

12004047 is a wasteful number, since it uses less digits than its factorization.

12004047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 12004047 is about 3464.6857000311. The cubic root of 12004047 is about 228.9685826098.

Adding to 12004047 its reverse (74040021), we get a palindrome (86044068).

The spelling of 12004047 in words is "twelve million, four thousand, forty-seven".