123235249 has 2 divisors, whose sum is σ = 123235250. Its totient is φ = 123235248.

The previous prime is 123235243. The next prime is 123235267. The reversal of 123235249 is 942532321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103388224 + 19847025 = 10168^2 + 4455^2 .

It is an emirp because it is prime and its reverse (942532321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123235249 - 2¹⁹ = 122710961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123235249.

It is not a weakly prime, because it can be changed into another prime (123235243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61617624 + 61617625.

It is an arithmetic number, because the mean of its divisors is an integer number (61617625).

Almost surely, 2^123235249 is an apocalyptic number.

It is an amenable number.

123235249 is a deficient number, since it is larger than the sum of its proper divisors (1).

123235249 is an equidigital number, since it uses as much as digits as its factorization.

123235249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 123235249 is about 11101.1372840804. The cubic root of 123235249 is about 497.6358377590.

It can be divided in two parts, 1232 and 35249, that added together give a square (36481 = 191²).

The spelling of 123235249 in words is "one hundred twenty-three million, two hundred thirty-five thousand, two hundred forty-nine".