128455267 has 2 divisors, whose sum is σ = 128455268. Its totient is φ = 128455266.

The previous prime is 128455241. The next prime is 128455279. The reversal of 128455267 is 762554821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128455267 - 2⁷ = 128455139 is a prime.

It is not a weakly prime, because it can be changed into another prime (128455237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64227633 + 64227634.

It is an arithmetic number, because the mean of its divisors is an integer number (64227634).

Almost surely, 2^128455267 is an apocalyptic number.

128455267 is a deficient number, since it is larger than the sum of its proper divisors (1).

128455267 is an equidigital number, since it uses as much as digits as its factorization.

128455267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 128455267 is about 11333.8107889624. The cubic root of 128455267 is about 504.5652134596.

The spelling of 128455267 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred sixty-seven".