12744523 has 4 divisors (see below), whose sum is σ = 13903128. Its totient is φ = 11585920.

The previous prime is 12744463. The next prime is 12744527. The reversal of 12744523 is 32544721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12744523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12744491 and 12744500.

It is not an unprimeable number, because it can be changed into a prime (12744527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579286 + ... + 579307.

It is an arithmetic number, because the mean of its divisors is an integer number (3475782).

Almost surely, 2^12744523 is an apocalyptic number.

12744523 is a deficient number, since it is larger than the sum of its proper divisors (1158605).

12744523 is a wasteful number, since it uses less digits than its factorization.

12744523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158604.

The product of its digits is 6720, while the sum is 28.

The square root of 12744523 is about 3569.9471984891. The cubic root of 12744523 is about 233.5829801961.

The spelling of 12744523 in words is "twelve million, seven hundred forty-four thousand, five hundred twenty-three".