123366289 has 2 divisors, whose sum is σ = 123366290. Its totient is φ = 123366288.

The previous prime is 123366247. The next prime is 123366301. The reversal of 123366289 is 982663321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 4730625 = 10892^2 + 2175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123366289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123366239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61683144 + 61683145.

It is an arithmetic number, because the mean of its divisors is an integer number (61683145).

Almost surely, 2^123366289 is an apocalyptic number.

It is an amenable number.

123366289 is a deficient number, since it is larger than the sum of its proper divisors (1).

123366289 is an equidigital number, since it uses as much as digits as its factorization.

123366289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 123366289 is about 11107.0378139268. The cubic root of 123366289 is about 497.8121593364.

The spelling of 123366289 in words is "one hundred twenty-three million, three hundred sixty-six thousand, two hundred eighty-nine".