128455243 has 8 divisors (see below), whose sum is σ = 146930688. Its totient is φ = 110010984.

The previous prime is 128455241. The next prime is 128455267. The reversal of 128455243 is 342554821.

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

It is a cyclic number.

It is not a de Polignac number, because 128455243 - 2¹ = 128455241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128455199 and 128455208.

It is not an unprimeable number, because it can be changed into a prime (128455241) 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, 1830 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (18366336).

Almost surely, 2^128455243 is an apocalyptic number.

128455243 is a deficient number, since it is larger than the sum of its proper divisors (18475445).

128455243 is a wasteful number, since it uses less digits than its factorization.

128455243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15593.

The product of its digits is 38400, while the sum is 34.

The square root of 128455243 is about 11333.8097301834. The cubic root of 128455243 is about 504.5651820360.

The spelling of 128455243 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred forty-three".