14042143121 has 4 divisors (see below), whose sum is σ = 14199920100. Its totient is φ = 13884366144.

The previous prime is 14042143091. The next prime is 14042143127. The reversal of 14042143121 is 12134124041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7125892225 + 6916250896 = 84415^2 + 83164^2 .

It is a cyclic number.

It is not a de Polignac number, because 14042143121 - 2¹⁰ = 14042142097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14042143127) 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, 78888356 + ... + 78888533.

It is an arithmetic number, because the mean of its divisors is an integer number (3549980025).

Almost surely, 2^14042143121 is an apocalyptic number.

It is an amenable number.

14042143121 is a deficient number, since it is larger than the sum of its proper divisors (157776979).

14042143121 is an equidigital number, since it uses as much as digits as its factorization.

14042143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157776978.

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

Adding to 14042143121 its reverse (12134124041), we get a palindrome (26176267162).

The spelling of 14042143121 in words is "fourteen billion, forty-two million, one hundred forty-three thousand, one hundred twenty-one".