128104099 has 12 divisors (see below), whose sum is σ = 135870696. Its totient is φ = 120761568.

The previous prime is 128104073. The next prime is 128104111. The reversal of 128104099 is 990401821.

It is not a de Polignac number, because 128104099 - 2⁹ = 128103587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128104799) 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, 83352 + ... + 84874.

It is an arithmetic number, because the mean of its divisors is an integer number (11322558).

Almost surely, 2^128104099 is an apocalyptic number.

128104099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128104099 is a deficient number, since it is larger than the sum of its proper divisors (7766597).

128104099 is a wasteful number, since it uses less digits than its factorization.

128104099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 128104099 is about 11318.3081332856. The cubic root of 128104099 is about 504.1050043143.

The spelling of 128104099 in words is "one hundred twenty-eight million, one hundred four thousand, ninety-nine".