128044161 has 48 divisors (see below), whose sum is σ = 219067264. Its totient is φ = 70543872.

The previous prime is 128044157. The next prime is 128044181. The reversal of 128044161 is 161440821.

It is a happy number.

It is not a de Polignac number, because 128044161 - 2² = 128044157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128044181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379785 + ... + 380121.

Almost surely, 2^128044161 is an apocalyptic number.

It is an amenable number.

128044161 is a deficient number, since it is larger than the sum of its proper divisors (91023103).

128044161 is a wasteful number, since it uses less digits than its factorization.

128044161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 128044161 is about 11315.6599895896. The cubic root of 128044161 is about 504.0263709747.

Adding to 128044161 its reverse (161440821), we get a palindrome (289484982).

The spelling of 128044161 in words is "one hundred twenty-eight million, forty-four thousand, one hundred sixty-one".