12724117 has 8 divisors (see below), whose sum is σ = 14788800. Its totient is φ = 10721184.

The previous prime is 12724097. The next prime is 12724133. The reversal of 12724117 is 71142721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12724117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12724091 and 12724100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12754117) 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, 14992 + ... + 15817.

It is an arithmetic number, because the mean of its divisors is an integer number (1848600).

Almost surely, 2^12724117 is an apocalyptic number.

It is an amenable number.

12724117 is a deficient number, since it is larger than the sum of its proper divisors (2064683).

12724117 is an equidigital number, since it uses as much as digits as its factorization.

12724117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30875.

The product of its digits is 784, while the sum is 25.

The square root of 12724117 is about 3567.0880280700. The cubic root of 12724117 is about 233.4582458159.

Adding to 12724117 its reverse (71142721), we get a palindrome (83866838).

The spelling of 12724117 in words is "twelve million, seven hundred twenty-four thousand, one hundred seventeen".