43643142143 has 2 divisors, whose sum is σ = 43643142144. Its totient is φ = 43643142142.

The previous prime is 43643142089. The next prime is 43643142157. The reversal of 43643142143 is 34124134634.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43643142143 - 2⁸ = 43643141887 is a prime.

It is a super-2 number, since 2×43643142143² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43643142043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21821571071 + 21821571072.

It is an arithmetic number, because the mean of its divisors is an integer number (21821571072).

Almost surely, 2^43643142143 is an apocalyptic number.

43643142143 is a deficient number, since it is larger than the sum of its proper divisors (1).

43643142143 is an equidigital number, since it uses as much as digits as its factorization.

43643142143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 35.

Adding to 43643142143 its reverse (34124134634), we get a palindrome (77767276777).

The spelling of 43643142143 in words is "forty-three billion, six hundred forty-three million, one hundred forty-two thousand, one hundred forty-three".