12039 has 4 divisors (see below), whose sum is σ = 16056. Its totient is φ = 8024.
The previous prime is 12037. The next prime is 12041. The reversal of 12039 is 93021.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (12037) and next prime (12041).
It is a cyclic number.
It is not a de Polignac number, because 12039 - 21 = 12037 is a prime.
It is a D-number.
It is a plaindrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12037) 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, 2004 + ... + 2009.
It is an arithmetic number, because the mean of its divisors is an integer number (4014).
212039 is an apocalyptic number.
12039 is a deficient number, since it is larger than the sum of its proper divisors (4017).
12039 is an equidigital number, since it uses as much as digits as its factorization.
12039 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4016.
The product of its (nonzero) digits is 54, while the sum is 15.
The square root of 12039 is about 109.7223769338. The cubic root of 12039 is about 22.9190601724.
The spelling of 12039 in words is "twelve thousand, thirty-nine".
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