12051239 has 2 divisors, whose sum is σ = 12051240. Its totient is φ = 12051238.

The previous prime is 12051229. The next prime is 12051293. The reversal of 12051239 is 93215021.

12051239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (12051293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12051239 - 2¹⁶ = 11985703 is a prime.

It is a super-2 number, since 2×12051239² = 290464722870242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12051209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6025619 + 6025620.

It is an arithmetic number, because the mean of its divisors is an integer number (6025620).

Almost surely, 2^12051239 is an apocalyptic number.

12051239 is a deficient number, since it is larger than the sum of its proper divisors (1).

12051239 is an equidigital number, since it uses as much as digits as its factorization.

12051239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12051239 is about 3471.4894497895. The cubic root of 12051239 is about 229.2682414438.

The spelling of 12051239 in words is "twelve million, fifty-one thousand, two hundred thirty-nine".