123042440142 has 12 divisors (see below), whose sum is σ = 266591953680. Its totient is φ = 41014146708.

The previous prime is 123042440117. The next prime is 123042440231. The reversal of 123042440142 is 241044240321.

123042440142 is a `hidden beast` number, since 1 + 230 + 4 + 24 + 401 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3417845542 + ... + 3417845577.

It is an arithmetic number, because the mean of its divisors is an integer number (22215996140).

Almost surely, 2^123042440142 is an apocalyptic number.

123042440142 is an abundant number, since it is smaller than the sum of its proper divisors (143549513538).

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

123042440142 is a wasteful number, since it uses less digits than its factorization.

123042440142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6835691127 (or 6835691124 counting only the distinct ones).

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

Adding to 123042440142 its reverse (241044240321), we get a palindrome (364086680463).

The spelling of 123042440142 in words is "one hundred twenty-three billion, forty-two million, four hundred forty thousand, one hundred forty-two".