123112799 has 16 divisors (see below), whose sum is σ = 132969600. Its totient is φ = 113626656.

The previous prime is 123112789. The next prime is 123112807. The reversal of 123112799 is 997211321.

It is a cyclic number.

It is not a de Polignac number, because 123112799 - 2⁴ = 123112783 is a prime.

It is a super-2 number, since 2×123112799² = 30313522555228802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112789) 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 in 15 ways as a sum of consecutive naturals, for example, 179912 + ... + 180594.

It is an arithmetic number, because the mean of its divisors is an integer number (8310600).

Almost surely, 2^123112799 is an apocalyptic number.

123112799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

123112799 is a deficient number, since it is larger than the sum of its proper divisors (9856801).

123112799 is a wasteful number, since it uses less digits than its factorization.

123112799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its digits is 6804, while the sum is 35.

The square root of 123112799 is about 11095.6207126956. The cubic root of 123112799 is about 497.4709614963.

The spelling of 123112799 in words is "one hundred twenty-three million, one hundred twelve thousand, seven hundred ninety-nine".