128071927 has 2 divisors, whose sum is σ = 128071928. Its totient is φ = 128071926.

The previous prime is 128071921. The next prime is 128071961. The reversal of 128071927 is 729170821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128071927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128071921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64035963 + 64035964.

It is an arithmetic number, because the mean of its divisors is an integer number (64035964).

Almost surely, 2^128071927 is an apocalyptic number.

128071927 is a deficient number, since it is larger than the sum of its proper divisors (1).

128071927 is an equidigital number, since it uses as much as digits as its factorization.

128071927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 128071927 is about 11316.8868068917. The cubic root of 128071927 is about 504.0628005540.

The spelling of 128071927 in words is "one hundred twenty-eight million, seventy-one thousand, nine hundred twenty-seven".