12004039 has 4 divisors (see below), whose sum is σ = 12047040. Its totient is φ = 11961040.

The previous prime is 12004033. The next prime is 12004043. The reversal of 12004039 is 93040021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93040021 = 31 ⋅3001291.

It is a cyclic number.

It is not a de Polignac number, because 12004039 - 2⁷ = 12003911 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 (12004033) 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, 21079 + ... + 21640.

It is an arithmetic number, because the mean of its divisors is an integer number (3011760).

Almost surely, 2^12004039 is an apocalyptic number.

12004039 is a deficient number, since it is larger than the sum of its proper divisors (43001).

12004039 is an equidigital number, since it uses as much as digits as its factorization.

12004039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43000.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12004039 is about 3464.6845455250. The cubic root of 12004039 is about 228.9685317451.

The spelling of 12004039 in words is "twelve million, four thousand, thirty-nine".