128450243 has 2 divisors, whose sum is σ = 128450244. Its totient is φ = 128450242.

The previous prime is 128450237. The next prime is 128450263. The reversal of 128450243 is 342054821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (342054821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128450243 - 2⁴ = 128450227 is a prime.

It is not a weakly prime, because it can be changed into another prime (128450263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64225121 + 64225122.

It is an arithmetic number, because the mean of its divisors is an integer number (64225122).

Almost surely, 2^128450243 is an apocalyptic number.

128450243 is a deficient number, since it is larger than the sum of its proper divisors (1).

128450243 is an equidigital number, since it uses as much as digits as its factorization.

128450243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 128450243 is about 11333.5891490737. The cubic root of 128450243 is about 504.5586353754.

The spelling of 128450243 in words is "one hundred twenty-eight million, four hundred fifty thousand, two hundred forty-three".