243143142001 has 6 divisors (see below), whose sum is σ = 244219027490. Its totient is φ = 242071975536.

The previous prime is 243143141951. The next prime is 243143142031. The reversal of 243143142001 is 100241341342.

It can be written as a sum of positive squares in only one way, i.e., 241081982001 + 2061160000 = 491001^2 + 45400^2 .

It is not a de Polignac number, because 243143142001 - 2⁹ = 243143141489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243143142031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2307756 + ... + 2410813.

Almost surely, 2^243143142001 is an apocalyptic number.

It is an amenable number.

243143142001 is a deficient number, since it is larger than the sum of its proper divisors (1075885489).

243143142001 is an frugal number, since it uses more digits than its factorization.

243143142001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719023 (or 4718796 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243143142001 its reverse (100241341342), we get a palindrome (343384483343).

The spelling of 243143142001 in words is "two hundred forty-three billion, one hundred forty-three million, one hundred forty-two thousand, one".