128039143 has 2 divisors, whose sum is σ = 128039144. Its totient is φ = 128039142.

The previous prime is 128039141. The next prime is 128039161. The reversal of 128039143 is 341930821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128039143 - 2¹ = 128039141 is a prime.

Together with 128039141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128039141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64019571 + 64019572.

It is an arithmetic number, because the mean of its divisors is an integer number (64019572).

Almost surely, 2^128039143 is an apocalyptic number.

128039143 is a deficient number, since it is larger than the sum of its proper divisors (1).

128039143 is an equidigital number, since it uses as much as digits as its factorization.

128039143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 128039143 is about 11315.4382592987. The cubic root of 128039143 is about 504.0197866906.

Adding to 128039143 its reverse (341930821), we get a palindrome (469969964).

The spelling of 128039143 in words is "one hundred twenty-eight million, thirty-nine thousand, one hundred forty-three".