123123312242 has 64 divisors (see below), whose sum is σ = 218270419200. Its totient is φ = 52062329088.

The previous prime is 123123312223. The next prime is 123123312287. The reversal of 123123312242 is 242213321321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17593088 + ... + 17600084.

It is an arithmetic number, because the mean of its divisors is an integer number (3410475300).

Almost surely, 2^123123312242 is an apocalyptic number.

123123312242 is a deficient number, since it is larger than the sum of its proper divisors (95147106958).

123123312242 is a wasteful number, since it uses less digits than its factorization.

123123312242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7360 (or 7346 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 123123312242 its reverse (242213321321), we get a palindrome (365336633563).

The spelling of 123123312242 in words is "one hundred twenty-three billion, one hundred twenty-three million, three hundred twelve thousand, two hundred forty-two".