111123410140242 has 128 divisors (see below), whose sum is σ = 249794723942400. Its totient is φ = 36614429647488.

The previous prime is 111123410140219. The next prime is 111123410140321. The reversal of 111123410140242 is 242041014321111.

111123410140242 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 2 + 3 + 410 + 1 + 4 + 0 + 242 = 666.

111123410140242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11552486109 + ... + 11552495727.

It is an arithmetic number, because the mean of its divisors is an integer number (1951521280800).

Almost surely, 2^{111123410140242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111123410140242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124897361971200).

111123410140242 is an abundant number, since it is smaller than the sum of its proper divisors (138671313802158).

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

111123410140242 is a wasteful number, since it uses less digits than its factorization.

111123410140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13317 (or 13311 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 111123410140242 its reverse (242041014321111), we get a palindrome (353164424461353).

The spelling of 111123410140242 in words is "one hundred eleven trillion, one hundred twenty-three billion, four hundred ten million, one hundred forty thousand, two hundred forty-two".