128106089 has 2 divisors, whose sum is σ = 128106090. Its totient is φ = 128106088.

The previous prime is 128106061. The next prime is 128106103. The reversal of 128106089 is 980601821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127870864 + 235225 = 11308^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 128106089 - 2¹⁶ = 128040553 is a prime.

It is a super-2 number, since 2×128106089² = 32822340077751842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128106029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64053044 + 64053045.

It is an arithmetic number, because the mean of its divisors is an integer number (64053045).

Almost surely, 2^128106089 is an apocalyptic number.

It is an amenable number.

128106089 is a deficient number, since it is larger than the sum of its proper divisors (1).

128106089 is an equidigital number, since it uses as much as digits as its factorization.

128106089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 128106089 is about 11318.3960436097. The cubic root of 128106089 is about 504.1076145970.

The spelling of 128106089 in words is "one hundred twenty-eight million, one hundred six thousand, eighty-nine".