12123850 has 24 divisors (see below), whose sum is σ = 23078880. Its totient is φ = 4735920.

The previous prime is 12123817. The next prime is 12123857. The reversal of 12123850 is 5832121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12123857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670 + ... + 4969.

It is an arithmetic number, because the mean of its divisors is an integer number (961620).

Almost surely, 2^12123850 is an apocalyptic number.

12123850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123850 is a deficient number, since it is larger than the sum of its proper divisors (10955030).

12123850 is a wasteful number, since it uses less digits than its factorization.

12123850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694 (or 5689 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12123850 is about 3481.9319350039. The cubic root of 12123850 is about 229.7277812796.

Adding to 12123850 its reverse (5832121), we get a palindrome (17955971).

The spelling of 12123850 in words is "twelve million, one hundred twenty-three thousand, eight hundred fifty".