123243424 has 48 divisors (see below), whose sum is σ = 259670880. Its totient is φ = 57404160.

The previous prime is 123243409. The next prime is 123243473. The reversal of 123243424 is 424342321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35427 + ... + 38749.

It is an arithmetic number, because the mean of its divisors is an integer number (5409810).

Almost surely, 2^123243424 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 123243424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129835440).

123243424 is an abundant number, since it is smaller than the sum of its proper divisors (136427456).

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

123243424 is a wasteful number, since it uses less digits than its factorization.

123243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413 (or 3405 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 123243424 is about 11101.5054834919. The cubic root of 123243424 is about 497.6468413289.

Adding to 123243424 its reverse (424342321), we get a palindrome (547585745).

The spelling of 123243424 in words is "one hundred twenty-three million, two hundred forty-three thousand, four hundred twenty-four".