47128129 has 8 divisors (see below), whose sum is σ = 48725600. Its totient is φ = 45553536.

The previous prime is 47128117. The next prime is 47128163. The reversal of 47128129 is 92182174.

47128129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47128129 - 2⁹ = 47127617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47128094 and 47128103.

It is not an unprimeable number, because it can be changed into a prime (47123129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479 + ... + 9820.

It is an arithmetic number, because the mean of its divisors is an integer number (6090700).

Almost surely, 2^47128129 is an apocalyptic number.

It is an amenable number.

47128129 is a deficient number, since it is larger than the sum of its proper divisors (1597471).

47128129 is a wasteful number, since it uses less digits than its factorization.

47128129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439.

The product of its digits is 8064, while the sum is 34.

The square root of 47128129 is about 6864.9930080081. The cubic root of 47128129 is about 361.2102503727.

The spelling of 47128129 in words is "forty-seven million, one hundred twenty-eight thousand, one hundred twenty-nine".