128205299 has 2 divisors, whose sum is σ = 128205300. Its totient is φ = 128205298.

The previous prime is 128205277. The next prime is 128205353. The reversal of 128205299 is 992502821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128205299 is a prime.

It is not a weakly prime, because it can be changed into another prime (128205269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64102649 + 64102650.

It is an arithmetic number, because the mean of its divisors is an integer number (64102650).

Almost surely, 2^128205299 is an apocalyptic number.

128205299 is a deficient number, since it is larger than the sum of its proper divisors (1).

128205299 is an equidigital number, since it uses as much as digits as its factorization.

128205299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 128205299 is about 11322.7778835408. Note that the first 3 decimals coincide. The cubic root of 128205299 is about 504.2377140895.

The spelling of 128205299 in words is "one hundred twenty-eight million, two hundred five thousand, two hundred ninety-nine".