128480129 has 2 divisors, whose sum is σ = 128480130. Its totient is φ = 128480128.

The previous prime is 128480119. The next prime is 128480137. The reversal of 128480129 is 921084821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 60450625 = 8248^2 + 7775^2 .

It is a cyclic number.

It is not a de Polignac number, because 128480129 - 2⁴ = 128480113 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (128480119) 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 as a sum of consecutive naturals, namely, 64240064 + 64240065.

It is an arithmetic number, because the mean of its divisors is an integer number (64240065).

Almost surely, 2^128480129 is an apocalyptic number.

It is an amenable number.

128480129 is a deficient number, since it is larger than the sum of its proper divisors (1).

128480129 is an equidigital number, since it uses as much as digits as its factorization.

128480129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 128480129 is about 11334.9075426313. The cubic root of 128480129 is about 504.5977635486.

The spelling of 128480129 in words is "one hundred twenty-eight million, four hundred eighty thousand, one hundred twenty-nine".