123142042242 has 48 divisors (see below), whose sum is σ = 281457221760. Its totient is φ = 38802921696.

The previous prime is 123142042237. The next prime is 123142042253. The reversal of 123142042242 is 242240241321.

It is a happy number.

123142042242 is a `hidden beast` number, since 1 + 231 + 4 + 2 + 0 + 422 + 4 + 2 = 666.

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 23 ways as a sum of consecutive naturals, for example, 230493 + ... + 547184.

It is an arithmetic number, because the mean of its divisors is an integer number (5863692120).

Almost surely, 2^123142042242 is an apocalyptic number.

123142042242 is an abundant number, since it is smaller than the sum of its proper divisors (158315179518).

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

123142042242 is a wasteful number, since it uses less digits than its factorization.

123142042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778167 (or 778164 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 123142042242 its reverse (242240241321), we get a palindrome (365382283563).

The spelling of 123142042242 in words is "one hundred twenty-three billion, one hundred forty-two million, forty-two thousand, two hundred forty-two".