128023033 has 4 divisors (see below), whose sum is σ = 131145588. Its totient is φ = 124900480.

The previous prime is 128023019. The next prime is 128023043. The reversal of 128023033 is 330320821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 126405049 = 1272^2 + 11243^2 .

It is a cyclic number.

It is not a de Polignac number, because 128023033 - 2⁵ = 128023001 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128022995 and 128023013.

It is not an unprimeable number, because it can be changed into a prime (128023003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561216 + ... + 1561297.

It is an arithmetic number, because the mean of its divisors is an integer number (32786397).

Almost surely, 2^128023033 is an apocalyptic number.

It is an amenable number.

128023033 is a deficient number, since it is larger than the sum of its proper divisors (3122555).

128023033 is an equidigital number, since it uses as much as digits as its factorization.

128023033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122554.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 128023033 is about 11314.7263776019. The cubic root of 128023033 is about 503.9986470632.

Adding to 128023033 its reverse (330320821), we get a palindrome (458343854).

The spelling of 128023033 in words is "one hundred twenty-eight million, twenty-three thousand, thirty-three".