128059423 has 4 divisors (see below), whose sum is σ = 133627248. Its totient is φ = 122491600.

The previous prime is 128059409. The next prime is 128059427. The reversal of 128059423 is 324950821.

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 128059423 - 2²¹ = 125962271 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 (128059427) 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, 2783878 + ... + 2783923.

It is an arithmetic number, because the mean of its divisors is an integer number (33406812).

Almost surely, 2^128059423 is an apocalyptic number.

128059423 is a deficient number, since it is larger than the sum of its proper divisors (5567825).

128059423 is an equidigital number, since it uses as much as digits as its factorization.

128059423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567824.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 128059423 is about 11316.3343446542. The cubic root of 128059423 is about 504.0463956932.

The spelling of 128059423 in words is "one hundred twenty-eight million, fifty-nine thousand, four hundred twenty-three".