128167 has 4 divisors (see below), whose sum is σ = 138040. Its totient is φ = 118296.

The previous prime is 128159. The next prime is 128173. The reversal of 128167 is 761821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128167 - 2³ = 128159 is a prime.

It is a Duffinian number.

It is a congruent 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, 4917 + ... + 4942.

It is an arithmetic number, because the mean of its divisors is an integer number (34510).

2¹²⁸¹⁶⁷ is an apocalyptic number.

128167 is a deficient number, since it is larger than the sum of its proper divisors (9873).

128167 is an equidigital number, since it uses as much as digits as its factorization.

128167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9872.

The product of its digits is 672, while the sum is 25.

The square root of 128167 is about 358.0041899196. The cubic root of 128167 is about 50.4187498475.

Adding to 128167 its reverse (761821), we get a palindrome (889988).

The spelling of 128167 in words is "one hundred twenty-eight thousand, one hundred sixty-seven".