123443142143 has 4 divisors (see below), whose sum is σ = 126779443320. Its totient is φ = 120106840968.

The previous prime is 123443142089. The next prime is 123443142149. The reversal of 123443142143 is 341241344321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341241344321 = 401 ⋅850975921.

It is a cyclic number.

It is not a de Polignac number, because 123443142143 - 2⁶ = 123443142079 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 (123443142149) 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, 1668150533 + ... + 1668150606.

It is an arithmetic number, because the mean of its divisors is an integer number (31694860830).

Almost surely, 2^123443142143 is an apocalyptic number.

123443142143 is a deficient number, since it is larger than the sum of its proper divisors (3336301177).

123443142143 is an equidigital number, since it uses as much as digits as its factorization.

123443142143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336301176.

The product of its digits is 27648, while the sum is 32.

Adding to 123443142143 its reverse (341241344321), we get a palindrome (464684486464).

The spelling of 123443142143 in words is "one hundred twenty-three billion, four hundred forty-three million, one hundred forty-two thousand, one hundred forty-three".