128318441 has 8 divisors (see below), whose sum is σ = 131295168. Its totient is φ = 125370000.

The previous prime is 128318429. The next prime is 128318461. The reversal of 128318441 is 144813821.

It is a happy number.

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 128318441 - 2¹⁰ = 128317417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128318398 and 128318407.

It is not an unprimeable number, because it can be changed into a prime (128318461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2246 + ... + 16176.

It is an arithmetic number, because the mean of its divisors is an integer number (16411896).

Almost surely, 2^128318441 is an apocalyptic number.

It is an amenable number.

128318441 is a deficient number, since it is larger than the sum of its proper divisors (2976727).

128318441 is a wasteful number, since it uses less digits than its factorization.

128318441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143.

The product of its digits is 6144, while the sum is 32.

The square root of 128318441 is about 11327.7729938413. The cubic root of 128318441 is about 504.3860014839.

The spelling of 128318441 in words is "one hundred twenty-eight million, three hundred eighteen thousand, four hundred forty-one".