12724249 has 2 divisors, whose sum is σ = 12724250. Its totient is φ = 12724248.

The previous prime is 12724223. The next prime is 12724273. The reversal of 12724249 is 94242721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12027024 + 697225 = 3468^2 + 835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12724249 is a prime.

It is a super-2 number, since 2×12724249² = 323813025228002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12724249.

It is not a weakly prime, because it can be changed into another prime (12724219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362124 + 6362125.

It is an arithmetic number, because the mean of its divisors is an integer number (6362125).

Almost surely, 2^12724249 is an apocalyptic number.

It is an amenable number.

12724249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12724249 is an equidigital number, since it uses as much as digits as its factorization.

12724249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 12724249 is about 3567.1065305090. The cubic root of 12724249 is about 233.4590531118.

The spelling of 12724249 in words is "twelve million, seven hundred twenty-four thousand, two hundred forty-nine".