128642033 has 8 divisors (see below), whose sum is σ = 143006976. Its totient is φ = 114915600.

The previous prime is 128642021. The next prime is 128642039. The reversal of 128642033 is 330246821.

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 128642033 - 2²⁰ = 127593457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128641987 and 128642005.

It is not an unprimeable number, because it can be changed into a prime (128642039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159203 + ... + 160008.

It is an arithmetic number, because the mean of its divisors is an integer number (17875872).

Almost surely, 2^128642033 is an apocalyptic number.

128642033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128642033 is a deficient number, since it is larger than the sum of its proper divisors (14364943).

128642033 is a wasteful number, since it uses less digits than its factorization.

128642033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319255.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 128642033 is about 11342.0471256295. The cubic root of 128642033 is about 504.8096305624.

Adding to 128642033 its reverse (330246821), we get a palindrome (458888854).

The spelling of 128642033 in words is "one hundred twenty-eight million, six hundred forty-two thousand, thirty-three".