128713099 has 2 divisors, whose sum is σ = 128713100. Its totient is φ = 128713098.

The previous prime is 128713033. The next prime is 128713141. The reversal of 128713099 is 990317821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128713099 - 2⁷ = 128712971 is a prime.

It is not a weakly prime, because it can be changed into another prime (128713009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64356549 + 64356550.

It is an arithmetic number, because the mean of its divisors is an integer number (64356550).

Almost surely, 2^128713099 is an apocalyptic number.

128713099 is a deficient number, since it is larger than the sum of its proper divisors (1).

128713099 is an equidigital number, since it uses as much as digits as its factorization.

128713099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 128713099 is about 11345.1795490420. The cubic root of 128713099 is about 504.9025711466.

The spelling of 128713099 in words is "one hundred twenty-eight million, seven hundred thirteen thousand, ninety-nine".