128554129 has 8 divisors (see below), whose sum is σ = 145077120. Its totient is φ = 112837200.

The previous prime is 128554121. The next prime is 128554157. The reversal of 128554129 is 921455821.

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 128554129 - 2³ = 128554121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128554121) 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, 201177 + ... + 201814.

It is an arithmetic number, because the mean of its divisors is an integer number (18134640).

Almost surely, 2^128554129 is an apocalyptic number.

It is an amenable number.

128554129 is a deficient number, since it is larger than the sum of its proper divisors (16522991).

128554129 is a wasteful number, since it uses less digits than its factorization.

128554129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403031.

The product of its digits is 28800, while the sum is 37.

The square root of 128554129 is about 11338.1713252182. The cubic root of 128554129 is about 504.6946217637.

The spelling of 128554129 in words is "one hundred twenty-eight million, five hundred fifty-four thousand, one hundred twenty-nine".