12140509 has 2 divisors, whose sum is σ = 12140510. Its totient is φ = 12140508.

The previous prime is 12140501. The next prime is 12140521. The reversal of 12140509 is 90504121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 272484 = 3445^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 12140509 - 2³ = 12140501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12140509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12140501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070254 + 6070255.

It is an arithmetic number, because the mean of its divisors is an integer number (6070255).

Almost surely, 2^12140509 is an apocalyptic number.

It is an amenable number.

12140509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140509 is an equidigital number, since it uses as much as digits as its factorization.

12140509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 12140509 is about 3484.3233202445. The cubic root of 12140509 is about 229.8329536898.

The spelling of 12140509 in words is "twelve million, one hundred forty thousand, five hundred nine".