128359441 has 4 divisors (see below), whose sum is σ = 146696512. Its totient is φ = 110022372.

The previous prime is 128359391. The next prime is 128359453. The reversal of 128359441 is 144953821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 144953821 = 2927 ⋅49523.

It is a cyclic number.

It is not a de Polignac number, because 128359441 - 2¹⁹ = 127835153 is a prime.

It is a super-2 number, since 2×128359441² = 32952292187664962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128359441.

It is not an unprimeable number, because it can be changed into a prime (128359541) 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 3 ways as a sum of consecutive naturals, for example, 9168525 + ... + 9168538.

It is an arithmetic number, because the mean of its divisors is an integer number (36674128).

Almost surely, 2^128359441 is an apocalyptic number.

It is an amenable number.

128359441 is a deficient number, since it is larger than the sum of its proper divisors (18337071).

128359441 is an equidigital number, since it uses as much as digits as its factorization.

128359441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18337070.

The product of its digits is 34560, while the sum is 37.

The square root of 128359441 is about 11329.5825607125. The cubic root of 128359441 is about 504.4397158312.

The spelling of 128359441 in words is "one hundred twenty-eight million, three hundred fifty-nine thousand, four hundred forty-one".