128371129 has 12 divisors (see below), whose sum is σ = 132387024. Its totient is φ = 124447752.

The previous prime is 128371127. The next prime is 128371151. The reversal of 128371129 is 921173821.

It is not a de Polignac number, because 128371129 - 2¹ = 128371127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128371094 and 128371103.

It is not an unprimeable number, because it can be changed into a prime (128371127) 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, 417994 + ... + 418300.

It is an arithmetic number, because the mean of its divisors is an integer number (11032252).

Almost surely, 2^128371129 is an apocalyptic number.

It is an amenable number.

128371129 is a deficient number, since it is larger than the sum of its proper divisors (4015895).

128371129 is an frugal number, since it uses more digits than its factorization.

128371129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 453 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 128371129 is about 11330.0983667398. The cubic root of 128371129 is about 504.4550262554.

The spelling of 128371129 in words is "one hundred twenty-eight million, three hundred seventy-one thousand, one hundred twenty-nine".