123245249 has 2 divisors, whose sum is σ = 123245250. Its totient is φ = 123245248.

The previous prime is 123245209. The next prime is 123245357. The reversal of 123245249 is 942542321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 4870849 = 10880^2 + 2207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123245249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123245209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61622624 + 61622625.

It is an arithmetic number, because the mean of its divisors is an integer number (61622625).

Almost surely, 2^123245249 is an apocalyptic number.

It is an amenable number.

123245249 is a deficient number, since it is larger than the sum of its proper divisors (1).

123245249 is an equidigital number, since it uses as much as digits as its factorization.

123245249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 123245249 is about 11101.5876792466. The cubic root of 123245249 is about 497.6492977169.

The spelling of 123245249 in words is "one hundred twenty-three million, two hundred forty-five thousand, two hundred forty-nine".