123031321111242 has 24 divisors (see below), whose sum is σ = 266568079308960. Its totient is φ = 41010407001000.

The previous prime is 123031321111229. The next prime is 123031321111249. The reversal of 123031321111242 is 242111123130321.

123031321111242 is a `hidden beast` number, since 1 + 2 + 303 + 1 + 3 + 2 + 1 + 111 + 242 = 666.

It is not an unprimeable number, because it can be changed into a prime (123031321111249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31135617 + ... + 34863867.

It is an arithmetic number, because the mean of its divisors is an integer number (11107003304540).

Almost surely, 2^{123031321111242} is an apocalyptic number.

123031321111242 is an abundant number, since it is smaller than the sum of its proper divisors (143536758197718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123031321111242 is a wasteful number, since it uses less digits than its factorization.

123031321111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561578 (or 5561575 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 123031321111242 its reverse (242111123130321), we get a palindrome (365142444241563).

The spelling of 123031321111242 in words is "one hundred twenty-three trillion, thirty-one billion, three hundred twenty-one million, one hundred eleven thousand, two hundred forty-two".