128039241 has 32 divisors (see below), whose sum is σ = 189923328. Its totient is φ = 76083840.

The previous prime is 128039221. The next prime is 128039243. The reversal of 128039241 is 142930821.

It is not a de Polignac number, because 128039241 - 2⁵ = 128039209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128039199 and 128039208.

It is not an unprimeable number, because it can be changed into a prime (128039243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574056 + ... + 574278.

It is an arithmetic number, because the mean of its divisors is an integer number (5935104).

It is a Poulet number, since it divides 2^128039240-1.

Almost surely, 2^128039241 is an apocalyptic number.

128039241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

128039241 is a deficient number, since it is larger than the sum of its proper divisors (61884087).

128039241 is a wasteful number, since it uses less digits than its factorization.

128039241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 128039241 is about 11315.4425896648. The cubic root of 128039241 is about 504.0199152813.

The spelling of 128039241 in words is "one hundred twenty-eight million, thirty-nine thousand, two hundred forty-one".