123243242342 has 32 divisors (see below), whose sum is σ = 205636624128. Its totient is φ = 54923940000.

The previous prime is 123243242263. The next prime is 123243242351. The reversal of 123243242342 is 243242342321.

It is a junction number, because it is equal to n+sod(n) for n = 123243242299 and 123243242308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269717 + ... + 565007.

It is an arithmetic number, because the mean of its divisors is an integer number (6426144504).

Almost surely, 2^123243242342 is an apocalyptic number.

123243242342 is a deficient number, since it is larger than the sum of its proper divisors (82393381786).

123243242342 is a wasteful number, since it uses less digits than its factorization.

123243242342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295676.

The product of its digits is 55296, while the sum is 32.

Adding to 123243242342 its reverse (243242342321), we get a palindrome (366485584663).

The spelling of 123243242342 in words is "one hundred twenty-three billion, two hundred forty-three million, two hundred forty-two thousand, three hundred forty-two".