12123774 has 48 divisors (see below), whose sum is σ = 28540512. Its totient is φ = 3697344.

The previous prime is 12123773. The next prime is 12123817. The reversal of 12123774 is 47732121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45967 + ... + 46229.

It is an arithmetic number, because the mean of its divisors is an integer number (594594).

Almost surely, 2^12123774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12123774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14270256).

12123774 is an abundant number, since it is smaller than the sum of its proper divisors (16416738).

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

12123774 is a wasteful number, since it uses less digits than its factorization.

12123774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 478 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 12123774 is about 3481.9210215052. The cubic root of 12123774 is about 229.7273012520.

Adding to 12123774 its reverse (47732121), we get a palindrome (59855895).

The spelling of 12123774 in words is "twelve million, one hundred twenty-three thousand, seven hundred seventy-four".