123243242 has 8 divisors (see below), whose sum is σ = 186592896. Its totient is φ = 61045612.

The previous prime is 123243233. The next prime is 123243247. The reversal of 123243242 is 242342321.

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

It is not an unprimeable number, because it can be changed into a prime (123243247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287738 + ... + 288165.

It is an arithmetic number, because the mean of its divisors is an integer number (23324112).

Almost surely, 2^123243242 is an apocalyptic number.

123243242 is a deficient number, since it is larger than the sum of its proper divisors (63349654).

123243242 is a wasteful number, since it uses less digits than its factorization.

123243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576012.

The product of its digits is 2304, while the sum is 23.

The square root of 123243242 is about 11101.4972864024. The cubic root of 123243242 is about 497.6465963618.

Adding to 123243242 its reverse (242342321), we get a palindrome (365585563).

The spelling of 123243242 in words is "one hundred twenty-three million, two hundred forty-three thousand, two hundred forty-two".