123443142142 has 8 divisors (see below), whose sum is σ = 185380777296. Its totient is φ = 61649549712.

The previous prime is 123443142089. The next prime is 123443142149. The reversal of 123443142142 is 241241344321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 36008538 + ... + 36011965.

It is an arithmetic number, because the mean of its divisors is an integer number (23172597162).

Almost surely, 2^123443142142 is an apocalyptic number.

123443142142 is a deficient number, since it is larger than the sum of its proper divisors (61937635154).

123443142142 is an equidigital number, since it uses as much as digits as its factorization.

123443142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72021362.

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

Adding to 123443142142 its reverse (241241344321), we get a palindrome (364684486463).

The spelling of 123443142142 in words is "one hundred twenty-three billion, four hundred forty-three million, one hundred forty-two thousand, one hundred forty-two".