42242120123143 has 4 divisors (see below), whose sum is σ = 44726950718640. Its totient is φ = 39757289527648.

The previous prime is 42242120123123. The next prime is 42242120123183. The reversal of 42242120123143 is 34132102124224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42242120123143 - 2¹³ = 42242120114951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242120123113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242415297723 + ... + 1242415297756.

It is an arithmetic number, because the mean of its divisors is an integer number (11181737679660).

Almost surely, 2^{42242120123143} is an apocalyptic number.

42242120123143 is a deficient number, since it is larger than the sum of its proper divisors (2484830595497).

42242120123143 is a wasteful number, since it uses less digits than its factorization.

42242120123143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484830595496.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 42242120123143 its reverse (34132102124224), we get a palindrome (76374222247367).

The spelling of 42242120123143 in words is "forty-two trillion, two hundred forty-two billion, one hundred twenty million, one hundred twenty-three thousand, one hundred forty-three".