123243343042 has 8 divisors (see below), whose sum is σ = 185039254332. Its totient is φ = 61563591600.

The previous prime is 123243342977. The next prime is 123243343049. The reversal of 123243343042 is 240343342321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 120943277361 + 2300065681 = 347769^2 + 47959^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 123243342995 and 123243343013.

It is not an unprimeable number, because it can be changed into a prime (123243343049) 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, 29037309 + ... + 29041552.

Almost surely, 2^123243343042 is an apocalyptic number.

123243343042 is a deficient number, since it is larger than the sum of its proper divisors (61795911290).

123243343042 is a wasteful number, since it uses less digits than its factorization.

123243343042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58079924.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 123243343042 its reverse (240343342321), we get a palindrome (363586685363).

The spelling of 123243343042 in words is "one hundred twenty-three billion, two hundred forty-three million, three hundred forty-three thousand, forty-two".