12123748 has 48 divisors (see below), whose sum is σ = 27502720. Its totient is φ = 4541184.

The previous prime is 12123731. The next prime is 12123751. The reversal of 12123748 is 84732121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6040 + ... + 7792.

Almost surely, 2^12123748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12123748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13751360).

12123748 is an abundant number, since it is smaller than the sum of its proper divisors (15378972).

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

12123748 is a wasteful number, since it uses less digits than its factorization.

12123748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1794 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 12123748 is about 3481.9172879320. The cubic root of 12123748 is about 229.7271370316.

Adding to 12123748 its reverse (84732121), we get a palindrome (96855869).

The spelling of 12123748 in words is "twelve million, one hundred twenty-three thousand, seven hundred forty-eight".