128118 has 16 divisors (see below), whose sum is σ = 259776. Its totient is φ = 42120.

The previous prime is 128113. The next prime is 128119. The reversal of 128118 is 811821.

It is a junction number, because it is equal to n+sod(n) for n = 128094 and 128103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128111) by changing a digit.

128118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 705 + ... + 867.

It is an arithmetic number, because the mean of its divisors is an integer number (16236).

2¹²⁸¹¹⁸ is an apocalyptic number.

128118 is an abundant number, since it is smaller than the sum of its proper divisors (131658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128118 is a wasteful number, since it uses less digits than its factorization.

128118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its digits is 128, while the sum is 21.

The square root of 128118 is about 357.9357484242. The cubic root of 128118 is about 50.4123237689.

Adding to 128118 its reverse (811821), we get a palindrome (939939).

The spelling of 128118 in words is "one hundred twenty-eight thousand, one hundred eighteen".