128032127 has 4 divisors (see below), whose sum is σ = 134770680. Its totient is φ = 121293576.

The previous prime is 128032097. The next prime is 128032141. The reversal of 128032127 is 721230821.

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

It is a cyclic number.

It is not a de Polignac number, because 128032127 - 2⁶ = 128032063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128032096 and 128032105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128032327) 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, 3369248 + ... + 3369285.

It is an arithmetic number, because the mean of its divisors is an integer number (33692670).

Almost surely, 2^128032127 is an apocalyptic number.

128032127 is a deficient number, since it is larger than the sum of its proper divisors (6738553).

128032127 is an equidigital number, since it uses as much as digits as its factorization.

128032127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738552.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 128032127 is about 11315.1282361271. The cubic root of 128032127 is about 504.0105804762.

Adding to 128032127 its reverse (721230821), we get a palindrome (849262948).

The spelling of 128032127 in words is "one hundred twenty-eight million, thirty-two thousand, one hundred twenty-seven".