21023424143 has 2 divisors, whose sum is σ = 21023424144. Its totient is φ = 21023424142.

The previous prime is 21023424131. The next prime is 21023424241. The reversal of 21023424143 is 34142432012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023424143 - 2¹⁰ = 21023423119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023424743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511712071 + 10511712072.

It is an arithmetic number, because the mean of its divisors is an integer number (10511712072).

Almost surely, 2^21023424143 is an apocalyptic number.

21023424143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023424143 is an equidigital number, since it uses as much as digits as its factorization.

21023424143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21023424143 its reverse (34142432012), we get a palindrome (55165856155).

The spelling of 21023424143 in words is "twenty-one billion, twenty-three million, four hundred twenty-four thousand, one hundred forty-three".