123288769 has 2 divisors, whose sum is σ = 123288770. Its totient is φ = 123288768.

The previous prime is 123288761. The next prime is 123288817. The reversal of 123288769 is 967882321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97278769 + 26010000 = 9863^2 + 5100^2 .

It is a cyclic number.

It is not a de Polignac number, because 123288769 - 2³ = 123288761 is a prime.

It is a super-2 number, since 2×123288769² = 30400241123070722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123288761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61644384 + 61644385.

It is an arithmetic number, because the mean of its divisors is an integer number (61644385).

Almost surely, 2^123288769 is an apocalyptic number.

It is an amenable number.

123288769 is a deficient number, since it is larger than the sum of its proper divisors (1).

123288769 is an equidigital number, since it uses as much as digits as its factorization.

123288769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 123288769 is about 11103.5475862447. The cubic root of 123288769 is about 497.7078669758.

The spelling of 123288769 in words is "one hundred twenty-three million, two hundred eighty-eight thousand, seven hundred sixty-nine".