12741509 has 8 divisors (see below), whose sum is σ = 13952352. Its totient is φ = 11539440.

The previous prime is 12741503. The next prime is 12741511. The reversal of 12741509 is 90514721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12741509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12741503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (1744044).

Almost surely, 2^12741509 is an apocalyptic number.

It is an amenable number.

12741509 is a deficient number, since it is larger than the sum of its proper divisors (1210843).

12741509 is a wasteful number, since it uses less digits than its factorization.

12741509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 12741509 is about 3569.5250384330. The cubic root of 12741509 is about 233.5645651062.

The spelling of 12741509 in words is "twelve million, seven hundred forty-one thousand, five hundred nine".