42123112142 has 32 divisors (see below), whose sum is σ = 68031627840. Its totient is φ = 19488084480.

The previous prime is 42123112079. The next prime is 42123112151. The reversal of 42123112142 is 24121132124.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5880359 + ... + 5887517.

It is an arithmetic number, because the mean of its divisors is an integer number (2125988370).

Almost surely, 2^42123112142 is an apocalyptic number.

42123112142 is a deficient number, since it is larger than the sum of its proper divisors (25908515698).

42123112142 is a wasteful number, since it uses less digits than its factorization.

42123112142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10076.

The product of its digits is 768, while the sum is 23.

Adding to 42123112142 its reverse (24121132124), we get a palindrome (66244244266).

The spelling of 42123112142 in words is "forty-two billion, one hundred twenty-three million, one hundred twelve thousand, one hundred forty-two".