128539027 has 2 divisors, whose sum is σ = 128539028. Its totient is φ = 128539026.

The previous prime is 128539007. The next prime is 128539063. The reversal of 128539027 is 720935821.

It is a weak prime.

It is an emirp because it is prime and its reverse (720935821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128539027 - 2⁷ = 128538899 is a prime.

It is not a weakly prime, because it can be changed into another prime (128539007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64269513 + 64269514.

It is an arithmetic number, because the mean of its divisors is an integer number (64269514).

Almost surely, 2^128539027 is an apocalyptic number.

128539027 is a deficient number, since it is larger than the sum of its proper divisors (1).

128539027 is an equidigital number, since it uses as much as digits as its factorization.

128539027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 128539027 is about 11337.5053252468. The cubic root of 128539027 is about 504.6748578538.

The spelling of 128539027 in words is "one hundred twenty-eight million, five hundred thirty-nine thousand, twenty-seven".