20042143001 has 4 divisors (see below), whose sum is σ = 20381840400. Its totient is φ = 19702445604.

The previous prime is 20042142949. The next prime is 20042143003. The reversal of 20042143001 is 10034124002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20042143001 - 2²⁶ = 19975034137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20042143003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169848611 + ... + 169848728.

It is an arithmetic number, because the mean of its divisors is an integer number (5095460100).

Almost surely, 2^20042143001 is an apocalyptic number.

It is an amenable number.

20042143001 is a deficient number, since it is larger than the sum of its proper divisors (339697399).

20042143001 is an equidigital number, since it uses as much as digits as its factorization.

20042143001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339697398.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20042143001 its reverse (10034124002), we get a palindrome (30076267003).

The spelling of 20042143001 in words is "twenty billion, forty-two million, one hundred forty-three thousand, one".