123366247 has 2 divisors, whose sum is σ = 123366248. Its totient is φ = 123366246.

The previous prime is 123366241. The next prime is 123366289. The reversal of 123366247 is 742663321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123366247 - 2³ = 123366239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123366241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61683123 + 61683124.

It is an arithmetic number, because the mean of its divisors is an integer number (61683124).

Almost surely, 2^123366247 is an apocalyptic number.

123366247 is a deficient number, since it is larger than the sum of its proper divisors (1).

123366247 is an equidigital number, since it uses as much as digits as its factorization.

123366247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 123366247 is about 11107.0359232335. The cubic root of 123366247 is about 497.8121028430.

The spelling of 123366247 in words is "one hundred twenty-three million, three hundred sixty-six thousand, two hundred forty-seven".