12128123 has 8 divisors (see below), whose sum is σ = 14676192. Its totient is φ = 9783936.

The previous prime is 12128117. The next prime is 12128131. The reversal of 12128123 is 32182121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12128123 - 2⁶ = 12128059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12128095 and 12128104.

It is not an unprimeable number, because it can be changed into a prime (12128113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50840 + ... + 51077.

It is an arithmetic number, because the mean of its divisors is an integer number (1834524).

Almost surely, 2^12128123 is an apocalyptic number.

12128123 is a deficient number, since it is larger than the sum of its proper divisors (2548069).

12128123 is a wasteful number, since it uses less digits than its factorization.

12128123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101941.

The product of its digits is 192, while the sum is 20.

The square root of 12128123 is about 3482.5454770900. The cubic root of 12128123 is about 229.7547669734.

The spelling of 12128123 in words is "twelve million, one hundred twenty-eight thousand, one hundred twenty-three".