12402125539 has 2 divisors, whose sum is σ = 12402125540. Its totient is φ = 12402125538.

The previous prime is 12402125509. The next prime is 12402125627. The reversal of 12402125539 is 93552120421.

It is a weak prime.

It is an emirp because it is prime and its reverse (93552120421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12402125539 - 2¹¹ = 12402123491 is a prime.

It is not a weakly prime, because it can be changed into another prime (12402125509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201062769 + 6201062770.

It is an arithmetic number, because the mean of its divisors is an integer number (6201062770).

Almost surely, 2^12402125539 is an apocalyptic number.

12402125539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402125539 is an equidigital number, since it uses as much as digits as its factorization.

12402125539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 12402125539 in words is "twelve billion, four hundred two million, one hundred twenty-five thousand, five hundred thirty-nine".