128411543 has 4 divisors (see below), whose sum is σ = 138289368. Its totient is φ = 118533720.

The previous prime is 128411539. The next prime is 128411551. The reversal of 128411543 is 345114821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345114821 = 283 ⋅1219487.

It is a cyclic number.

It is not a de Polignac number, because 128411543 - 2² = 128411539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128410543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4938893 + ... + 4938918.

It is an arithmetic number, because the mean of its divisors is an integer number (34572342).

Almost surely, 2^128411543 is an apocalyptic number.

128411543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128411543 is a deficient number, since it is larger than the sum of its proper divisors (9877825).

128411543 is an equidigital number, since it uses as much as digits as its factorization.

128411543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9877824.

The product of its digits is 3840, while the sum is 29.

The square root of 128411543 is about 11331.8817060539. The cubic root of 128411543 is about 504.5079584750.

The spelling of 128411543 in words is "one hundred twenty-eight million, four hundred eleven thousand, five hundred forty-three".