128481443 has 4 divisors (see below), whose sum is σ = 128743608. Its totient is φ = 128219280.

The previous prime is 128481403. The next prime is 128481469. The reversal of 128481443 is 344184821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344184821 = 2437 ⋅141233.

It is a cyclic number.

It is not a de Polignac number, because 128481443 - 2¹⁰ = 128480419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128481403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130346 + ... + 131327.

It is an arithmetic number, because the mean of its divisors is an integer number (32185902).

Almost surely, 2^128481443 is an apocalyptic number.

128481443 is a deficient number, since it is larger than the sum of its proper divisors (262165).

128481443 is an equidigital number, since it uses as much as digits as its factorization.

128481443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262164.

The product of its digits is 24576, while the sum is 35.

The square root of 128481443 is about 11334.9655050203. The cubic root of 128481443 is about 504.5994837606.

The spelling of 128481443 in words is "one hundred twenty-eight million, four hundred eighty-one thousand, four hundred forty-three".