128432043 has 12 divisors (see below), whose sum is σ = 186476680. Its totient is φ = 85176576.

The previous prime is 128432041. The next prime is 128432047. The reversal of 128432043 is 340234821.

It is not a de Polignac number, because 128432043 - 2¹ = 128432041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128431998 and 128432016.

It is not an unprimeable number, because it can be changed into a prime (128432041) 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 in 11 ways as a sum of consecutive naturals, for example, 35233 + ... + 38706.

Almost surely, 2^128432043 is an apocalyptic number.

128432043 is a deficient number, since it is larger than the sum of its proper divisors (58044637).

128432043 is a wasteful number, since it uses less digits than its factorization.

128432043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74138 (or 74135 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 128432043 is about 11332.7861975774. The cubic root of 128432043 is about 504.5348040960.

Adding to 128432043 its reverse (340234821), we get a palindrome (468666864).

The spelling of 128432043 in words is "one hundred twenty-eight million, four hundred thirty-two thousand, forty-three".