123140112 has 40 divisors (see below), whose sum is σ = 336826656. Its totient is φ = 38631936.

The previous prime is 123140099. The next prime is 123140117. The reversal of 123140112 is 211041321.

It is a junction number, because it is equal to n+sod(n) for n = 123140091 and 123140100.

It is not an unprimeable number, because it can be changed into a prime (123140117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74638 + ... + 76269.

Almost surely, 2^123140112 is an apocalyptic number.

123140112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123140112 is an abundant number, since it is smaller than the sum of its proper divisors (213686544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123140112 is a wasteful number, since it uses less digits than its factorization.

123140112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150935 (or 150929 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 123140112 is about 11096.8514453425. The cubic root of 123140112 is about 497.5077473268.

Adding to 123140112 its reverse (211041321), we get a palindrome (334181433).

The spelling of 123140112 in words is "one hundred twenty-three million, one hundred forty thousand, one hundred twelve".