12004 has 6 divisors (see below), whose sum is σ = 21014. Its totient is φ = 6000.

The previous prime is 11987. The next prime is 12007. The reversal of 12004 is 40021.

12004 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 10404 + 1600 = 102^2 + 40^2 .

It is a plaindrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1497 + ... + 1504.

2¹²⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

12004 is a deficient number, since it is larger than the sum of its proper divisors (9010).

12004 is a wasteful number, since it uses less digits than its factorization.

12004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 12004 is about 109.5627673984. The cubic root of 12004 is about 22.8968283779.

Adding to 12004 its reverse (40021), we get a palindrome (52025).

The spelling of 12004 in words is "twelve thousand, four", and thus it is an iban number.