12129124 has 24 divisors (see below), whose sum is σ = 24385088. Its totient is φ = 5171040.

The previous prime is 12129113. The next prime is 12129127. The reversal of 12129124 is 42192121.

It is a junction number, because it is equal to n+sod(n) for n = 12129095 and 12129104.

It is not an unprimeable number, because it can be changed into a prime (12129127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4882 + ... + 6934.

Almost surely, 2^12129124 is an apocalyptic number.

12129124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12129124 is an abundant number, since it is smaller than the sum of its proper divisors (12255964).

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

12129124 is a wasteful number, since it uses less digits than its factorization.

12129124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275 (or 2273 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 12129124 is about 3482.6891908409. The cubic root of 12129124 is about 229.7610877699.

The spelling of 12129124 in words is "twelve million, one hundred twenty-nine thousand, one hundred twenty-four".