128471243 has 2 divisors, whose sum is σ = 128471244. Its totient is φ = 128471242.

The previous prime is 128471237. The next prime is 128471249. The reversal of 128471243 is 342174821.

It is a balanced prime because it is at equal distance from previous prime (128471237) and next prime (128471249).

It is a cyclic number.

It is not a de Polignac number, because 128471243 - 2⁸ = 128470987 is a prime.

It is not a weakly prime, because it can be changed into another prime (128471249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64235621 + 64235622.

It is an arithmetic number, because the mean of its divisors is an integer number (64235622).

Almost surely, 2^128471243 is an apocalyptic number.

128471243 is a deficient number, since it is larger than the sum of its proper divisors (1).

128471243 is an equidigital number, since it uses as much as digits as its factorization.

128471243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 32.

The square root of 128471243 is about 11334.5155608875. The cubic root of 128471243 is about 504.5861302085.

It can be divided in two parts, 1284 and 71243, that added together give a palindrome (72527).

The spelling of 128471243 in words is "one hundred twenty-eight million, four hundred seventy-one thousand, two hundred forty-three".