123324240 has 240 divisors, whose sum is σ = 435472128. Its totient is φ = 28686336.

The previous prime is 123324221. The next prime is 123324247. The reversal of 123324240 is 42423321.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123324247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2623897 + ... + 2623943.

Almost surely, 2^123324240 is an apocalyptic number.

123324240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123324240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217736064).

123324240 is an abundant number, since it is smaller than the sum of its proper divisors (312147888).

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

123324240 is a wasteful number, since it uses less digits than its factorization.

123324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123324240 is about 11105.1447536716. The cubic root of 123324240 is about 497.7555936885.

Adding to 123324240 its reverse (42423321), we get a palindrome (165747561).

The spelling of 123324240 in words is "one hundred twenty-three million, three hundred twenty-four thousand, two hundred forty".