123424242 has 8 divisors (see below), whose sum is σ = 246848496. Its totient is φ = 41141412.

The previous prime is 123424241. The next prime is 123424271. The reversal of 123424242 is 242424321.

It is a sphenic number, since it is the product of 3 distinct primes.

123424242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (123424241) 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 3 ways as a sum of consecutive naturals, for example, 10285348 + ... + 10285359.

It is an arithmetic number, because the mean of its divisors is an integer number (30856062).

Almost surely, 2^123424242 is an apocalyptic number.

123424242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123424242 is a wasteful number, since it uses less digits than its factorization.

123424242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20570712.

The product of its digits is 3072, while the sum is 24.

The square root of 123424242 is about 11109.6463490068. The cubic root of 123424242 is about 497.8900984880.

Adding to 123424242 its reverse (242424321), we get a palindrome (365848563).

The spelling of 123424242 in words is "one hundred twenty-three million, four hundred twenty-four thousand, two hundred forty-two".