128701841 has 4 divisors (see below), whose sum is σ = 130622832. Its totient is φ = 126780852.

The previous prime is 128701819. The next prime is 128701871. The reversal of 128701841 is 148107821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148107821 = 251 ⋅590071.

It is a cyclic number.

It is not a de Polignac number, because 128701841 - 2¹⁴ = 128685457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128701798 and 128701807.

It is not an unprimeable number, because it can be changed into a prime (128701871) 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, 960395 + ... + 960528.

It is an arithmetic number, because the mean of its divisors is an integer number (32655708).

Almost surely, 2^128701841 is an apocalyptic number.

It is an amenable number.

128701841 is a deficient number, since it is larger than the sum of its proper divisors (1920991).

128701841 is an equidigital number, since it uses as much as digits as its factorization.

128701841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920990.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 128701841 is about 11344.6833803328. The cubic root of 128701841 is about 504.8878501407.

The spelling of 128701841 in words is "one hundred twenty-eight million, seven hundred one thousand, eight hundred forty-one".