128579941 has 4 divisors (see below), whose sum is σ = 146948512. Its totient is φ = 110211372.

The previous prime is 128579923. The next prime is 128579951. The reversal of 128579941 is 149975821.

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 a cyclic number.

It is not a de Polignac number, because 128579941 - 2¹³ = 128571749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128579891 and 128579900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128579951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9184275 + ... + 9184288.

It is an arithmetic number, because the mean of its divisors is an integer number (36737128).

Almost surely, 2^128579941 is an apocalyptic number.

It is an amenable number.

128579941 is a deficient number, since it is larger than the sum of its proper divisors (18368571).

128579941 is an equidigital number, since it uses as much as digits as its factorization.

128579941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18368570.

The product of its digits is 181440, while the sum is 46.

The square root of 128579941 is about 11339.3095468816. The cubic root of 128579941 is about 504.7283982122.

The spelling of 128579941 in words is "one hundred twenty-eight million, five hundred seventy-nine thousand, nine hundred forty-one".