128241799 has 8 divisors (see below), whose sum is σ = 151616160. Its totient is φ = 106130976.

The previous prime is 128241797. The next prime is 128241881. The reversal of 128241799 is 997142821.

It is a happy number.

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

It is not a de Polignac number, because 128241799 - 2¹ = 128241797 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 (128241797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315664 + ... + 316069.

It is an arithmetic number, because the mean of its divisors is an integer number (18952020).

Almost surely, 2^128241799 is an apocalyptic number.

128241799 is a deficient number, since it is larger than the sum of its proper divisors (23374361).

128241799 is an equidigital number, since it uses as much as digits as its factorization.

128241799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631769.

The product of its digits is 72576, while the sum is 43.

The square root of 128241799 is about 11324.3895641222. The cubic root of 128241799 is about 504.2855616444.

The spelling of 128241799 in words is "one hundred twenty-eight million, two hundred forty-one thousand, seven hundred ninety-nine".