128143027 has 4 divisors (see below), whose sum is σ = 128641896. Its totient is φ = 127644160.

The previous prime is 128143007. The next prime is 128143033. The reversal of 128143027 is 720341821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720341821 = 1171 ⋅615151.

It is a cyclic number.

It is not a de Polignac number, because 128143027 - 2⁷ = 128142899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128142986 and 128143004.

It is not an unprimeable number, because it can be changed into a prime (128143007) 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, 249049 + ... + 249562.

It is an arithmetic number, because the mean of its divisors is an integer number (32160474).

Almost surely, 2^128143027 is an apocalyptic number.

128143027 is a deficient number, since it is larger than the sum of its proper divisors (498869).

128143027 is an equidigital number, since it uses as much as digits as its factorization.

128143027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498868.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 128143027 is about 11320.0276943124. The cubic root of 128143027 is about 504.1560612603.

Adding to 128143027 its reverse (720341821), we get a palindrome (848484848).

The spelling of 128143027 in words is "one hundred twenty-eight million, one hundred forty-three thousand, twenty-seven".