123105699 has 6 divisors (see below), whose sum is σ = 177819356. Its totient is φ = 82070460.

The previous prime is 123105679. The next prime is 123105727. The reversal of 123105699 is 996501321.

It is not a de Polignac number, because 123105699 - 2⁷ = 123105571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123105649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6839197 + ... + 6839214.

Almost surely, 2^123105699 is an apocalyptic number.

123105699 is a deficient number, since it is larger than the sum of its proper divisors (54713657).

123105699 is a wasteful number, since it uses less digits than its factorization.

123105699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13678417 (or 13678414 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 123105699 is about 11095.3007620343. The cubic root of 123105699 is about 497.4613981480.

The spelling of 123105699 in words is "one hundred twenty-three million, one hundred five thousand, six hundred ninety-nine".