43135128 has 48 divisors (see below), whose sum is σ = 117533520. Its totient is φ = 14291136.

The previous prime is 43135123. The next prime is 43135129. The reversal of 43135128 is 82153134.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43135121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10725 + ... + 14187.

It is an arithmetic number, because the mean of its divisors is an integer number (2448615).

Almost surely, 2^43135128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43135128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58766760).

43135128 is an abundant number, since it is smaller than the sum of its proper divisors (74398392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43135128 is a wasteful number, since it uses less digits than its factorization.

43135128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 3641 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 43135128 is about 6567.7338557527. The cubic root of 43135128 is about 350.7064045977.

The spelling of 43135128 in words is "forty-three million, one hundred thirty-five thousand, one hundred twenty-eight".