20143021043 has 2 divisors, whose sum is σ = 20143021044. Its totient is φ = 20143021042.

The previous prime is 20143021037. The next prime is 20143021091. The reversal of 20143021043 is 34012034102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20143021043 - 2⁴ = 20143021027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20143021543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071510521 + 10071510522.

It is an arithmetic number, because the mean of its divisors is an integer number (10071510522).

Almost surely, 2^20143021043 is an apocalyptic number.

20143021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143021043 is an equidigital number, since it uses as much as digits as its factorization.

20143021043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20143021043 its reverse (34012034102), we get a palindrome (54155055145).

The spelling of 20143021043 in words is "twenty billion, one hundred forty-three million, twenty-one thousand, forty-three".