12007139 has 4 divisors (see below), whose sum is σ = 12040224. Its totient is φ = 11974056.

The previous prime is 12007123. The next prime is 12007147. The reversal of 12007139 is 93170021.

12007139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12007139 - 2⁴ = 12007123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12007159) 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, 15992 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (3010056).

Almost surely, 2^12007139 is an apocalyptic number.

12007139 is a deficient number, since it is larger than the sum of its proper divisors (33085).

12007139 is an equidigital number, since it uses as much as digits as its factorization.

12007139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33084.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12007139 is about 3465.1318878219. The cubic root of 12007139 is about 228.9882401492.

The spelling of 12007139 in words is "twelve million, seven thousand, one hundred thirty-nine".