12920249 has 2 divisors, whose sum is σ = 12920250. Its totient is φ = 12920248.

The previous prime is 12920239. The next prime is 12920261. The reversal of 12920249 is 94202921.

12920249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8791225 + 4129024 = 2965^2 + 2032^2 .

It is an emirp because it is prime and its reverse (94202921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12920249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12920239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6460124 + 6460125.

It is an arithmetic number, because the mean of its divisors is an integer number (6460125).

Almost surely, 2^12920249 is an apocalyptic number.

It is an amenable number.

12920249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12920249 is an equidigital number, since it uses as much as digits as its factorization.

12920249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12920249 is about 3594.4747877819. The cubic root of 12920249 is about 234.6516583445.

The spelling of 12920249 in words is "twelve million, nine hundred twenty thousand, two hundred forty-nine".