123543144 has 96 divisors (see below), whose sum is σ = 350925120. Its totient is φ = 40715136.

The previous prime is 123543139. The next prime is 123543169. The reversal of 123543144 is 441345321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199924 + ... + 200540.

It is an arithmetic number, because the mean of its divisors is an integer number (3655470).

Almost surely, 2^123543144 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 123543144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175462560).

123543144 is an abundant number, since it is smaller than the sum of its proper divisors (227381976).

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

123543144 is a wasteful number, since it uses less digits than its factorization.

123543144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 725 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 123543144 is about 11114.9963562747. The cubic root of 123543144 is about 498.0499296723.

Adding to 123543144 its reverse (441345321), we get a palindrome (564888465).

The spelling of 123543144 in words is "one hundred twenty-three million, five hundred forty-three thousand, one hundred forty-four".