123023144242 has 16 divisors (see below), whose sum is σ = 188857753920. Its totient is φ = 60083841168.

The previous prime is 123023144239. The next prime is 123023144249. The reversal of 123023144242 is 242441320321.

It is a self number, because there is not a number n which added to its sum of digits gives 123023144242.

It is not an unprimeable number, because it can be changed into a prime (123023144249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3301758 + ... + 3338809.

It is an arithmetic number, because the mean of its divisors is an integer number (11803609620).

Almost surely, 2^123023144242 is an apocalyptic number.

123023144242 is a deficient number, since it is larger than the sum of its proper divisors (65834609678).

123023144242 is a wasteful number, since it uses less digits than its factorization.

123023144242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640785.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123023144242 its reverse (242441320321), we get a palindrome (365464464563).

The spelling of 123023144242 in words is "one hundred twenty-three billion, twenty-three million, one hundred forty-four thousand, two hundred forty-two".