123122249 has 2 divisors, whose sum is σ = 123122250. Its totient is φ = 123122248.

The previous prime is 123122239. The next prime is 123122257. The reversal of 123122249 is 942221321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123054649 + 67600 = 11093^2 + 260^2 .

It is an emirp because it is prime and its reverse (942221321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123122249 is a prime.

It is not a weakly prime, because it can be changed into another prime (123122239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561124 + 61561125.

It is an arithmetic number, because the mean of its divisors is an integer number (61561125).

Almost surely, 2^123122249 is an apocalyptic number.

It is an amenable number.

123122249 is a deficient number, since it is larger than the sum of its proper divisors (1).

123122249 is an equidigital number, since it uses as much as digits as its factorization.

123122249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 123122249 is about 11096.0465482081. The cubic root of 123122249 is about 497.4836896078.

The spelling of 123122249 in words is "one hundred twenty-three million, one hundred twenty-two thousand, two hundred forty-nine".