128253 has 4 divisors (see below), whose sum is σ = 171008. Its totient is φ = 85500.

The previous prime is 128239. The next prime is 128257. The reversal of 128253 is 352821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 128253 - 2⁴ = 128237 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

128253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21373 + ... + 21378.

It is an arithmetic number, because the mean of its divisors is an integer number (42752).

2¹²⁸²⁵³ is an apocalyptic number.

It is an amenable number.

128253 is a deficient number, since it is larger than the sum of its proper divisors (42755).

128253 is an equidigital number, since it uses as much as digits as its factorization.

128253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42754.

The product of its digits is 480, while the sum is 21.

The square root of 128253 is about 358.1242801040. The cubic root of 128253 is about 50.4300243124.

The spelling of 128253 in words is "one hundred twenty-eight thousand, two hundred fifty-three".