123248569 has 2 divisors, whose sum is σ = 123248570. Its totient is φ = 123248568.

The previous prime is 123248561. The next prime is 123248603. The reversal of 123248569 is 965842321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92390544 + 30858025 = 9612^2 + 5555^2 .

It is a cyclic number.

It is not a de Polignac number, because 123248569 - 2³ = 123248561 is a prime.

It is a super-2 number, since 2×123248569² = 30380419521095522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123248561) 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, 61624284 + 61624285.

It is an arithmetic number, because the mean of its divisors is an integer number (61624285).

Almost surely, 2^123248569 is an apocalyptic number.

It is an amenable number.

123248569 is a deficient number, since it is larger than the sum of its proper divisors (1).

123248569 is an equidigital number, since it uses as much as digits as its factorization.

123248569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 123248569 is about 11101.7372064015. The cubic root of 123248569 is about 497.6537662619.

The spelling of 123248569 in words is "one hundred twenty-three million, two hundred forty-eight thousand, five hundred sixty-nine".