128034799 has 2 divisors, whose sum is σ = 128034800. Its totient is φ = 128034798.

The previous prime is 128034793. The next prime is 128034821. The reversal of 128034799 is 997430821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128034799 - 2⁷ = 128034671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128034793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64017399 + 64017400.

It is an arithmetic number, because the mean of its divisors is an integer number (64017400).

Almost surely, 2^128034799 is an apocalyptic number.

128034799 is a deficient number, since it is larger than the sum of its proper divisors (1).

128034799 is an equidigital number, since it uses as much as digits as its factorization.

128034799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 128034799 is about 11315.2463075268. The cubic root of 128034799 is about 504.0140866454.

The spelling of 128034799 in words is "one hundred twenty-eight million, thirty-four thousand, seven hundred ninety-nine".