128059523 has 4 divisors (see below), whose sum is σ = 131182968. Its totient is φ = 124936080.

The previous prime is 128059511. The next prime is 128059531. The reversal of 128059523 is 325950821.

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-128059523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128059573) 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, 1561661 + ... + 1561742.

It is an arithmetic number, because the mean of its divisors is an integer number (32795742).

Almost surely, 2^128059523 is an apocalyptic number.

128059523 is a deficient number, since it is larger than the sum of its proper divisors (3123445).

128059523 is an equidigital number, since it uses as much as digits as its factorization.

128059523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123444.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 128059523 is about 11316.3387630452. The cubic root of 128059523 is about 504.0465268944.

The spelling of 128059523 in words is "one hundred twenty-eight million, fifty-nine thousand, five hundred twenty-three".