128441269 has 8 divisors (see below), whose sum is σ = 146210112. Its totient is φ = 111687840.

The previous prime is 128441267. The next prime is 128441279. The reversal of 128441269 is 962144821.

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

It is not a de Polignac number, because 128441269 - 2¹ = 128441267 is a prime.

It is a super-2 number, since 2×128441269² = 32994319164660722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128441267) 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, 253584 + ... + 254089.

It is an arithmetic number, because the mean of its divisors is an integer number (18276264).

Almost surely, 2^128441269 is an apocalyptic number.

It is an amenable number.

128441269 is a deficient number, since it is larger than the sum of its proper divisors (17768843).

128441269 is a wasteful number, since it uses less digits than its factorization.

128441269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507707.

The product of its digits is 27648, while the sum is 37.

The square root of 128441269 is about 11333.1932393302. The cubic root of 128441269 is about 504.5468850028.

The spelling of 128441269 in words is "one hundred twenty-eight million, four hundred forty-one thousand, two hundred sixty-nine".