20042343143 has 2 divisors, whose sum is σ = 20042343144. Its totient is φ = 20042343142.

The previous prime is 20042343109. The next prime is 20042343157. The reversal of 20042343143 is 34134324002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20042343143 - 2²² = 20038148839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042346143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021171571 + 10021171572.

It is an arithmetic number, because the mean of its divisors is an integer number (10021171572).

Almost surely, 2^20042343143 is an apocalyptic number.

20042343143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042343143 is an equidigital number, since it uses as much as digits as its factorization.

20042343143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20042343143 its reverse (34134324002), we get a palindrome (54176667145).

The spelling of 20042343143 in words is "twenty billion, forty-two million, three hundred forty-three thousand, one hundred forty-three".