128751 has 8 divisors (see below), whose sum is σ = 196224. Its totient is φ = 73560.

The previous prime is 128749. The next prime is 128761. The reversal of 128751 is 157821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128751 - 2¹ = 128749 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3045 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (24528).

2¹²⁸⁷⁵¹ is an apocalyptic number.

128751 is a deficient number, since it is larger than the sum of its proper divisors (67473).

128751 is an equidigital number, since it uses as much as digits as its factorization.

128751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141.

The product of its digits is 560, while the sum is 24.

The square root of 128751 is about 358.8188958235. The cubic root of 128751 is about 50.4952124338.

The spelling of 128751 in words is "one hundred twenty-eight thousand, seven hundred fifty-one".