122785723 has 2 divisors, whose sum is σ = 122785724. Its totient is φ = 122785722.

The previous prime is 122785717. The next prime is 122785757. The reversal of 122785723 is 327587221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122785723 - 2²⁵ = 89231291 is a prime.

It is not a weakly prime, because it can be changed into another prime (122785763) 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, 61392861 + 61392862.

It is an arithmetic number, because the mean of its divisors is an integer number (61392862).

Almost surely, 2^122785723 is an apocalyptic number.

122785723 is a deficient number, since it is larger than the sum of its proper divisors (1).

122785723 is an equidigital number, since it uses as much as digits as its factorization.

122785723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 122785723 is about 11080.8719422255. The cubic root of 122785723 is about 497.0300240827.

The spelling of 122785723 in words is "one hundred twenty-two million, seven hundred eighty-five thousand, seven hundred twenty-three".