128107 has 4 divisors (see below), whose sum is σ = 146416. Its totient is φ = 109800.

The previous prime is 128099. The next prime is 128111. The reversal of 128107 is 701821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701821 = 269 ⋅2609.

It is a cyclic number.

It is not a de Polignac number, because 128107 - 2³ = 128099 is a prime.

It is a super-2 number, since 2×128107² = 32822806898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9144 + ... + 9157.

It is an arithmetic number, because the mean of its divisors is an integer number (36604).

2¹²⁸¹⁰⁷ is an apocalyptic number.

128107 is a deficient number, since it is larger than the sum of its proper divisors (18309).

128107 is an equidigital number, since it uses as much as digits as its factorization.

128107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 128107 is about 357.9203822081. The cubic root of 128107 is about 50.4108809547.

Adding to 128107 its reverse (701821), we get a palindrome (829928).

The spelling of 128107 in words is "one hundred twenty-eight thousand, one hundred seven".