128541223 has 4 divisors (see below), whose sum is σ = 129466120. Its totient is φ = 127616328.

The previous prime is 128541197. The next prime is 128541241. The reversal of 128541223 is 322145821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128541223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128541191 and 128541200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128541263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462240 + ... + 462517.

It is an arithmetic number, because the mean of its divisors is an integer number (32366530).

Almost surely, 2^128541223 is an apocalyptic number.

128541223 is a deficient number, since it is larger than the sum of its proper divisors (924897).

128541223 is an equidigital number, since it uses as much as digits as its factorization.

128541223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924896.

The product of its digits is 3840, while the sum is 28.

The square root of 128541223 is about 11337.6021715352. The cubic root of 128541223 is about 504.6777318439.

The spelling of 128541223 in words is "one hundred twenty-eight million, five hundred forty-one thousand, two hundred twenty-three".