128582471 has 2 divisors, whose sum is σ = 128582472. Its totient is φ = 128582470.

The previous prime is 128582453. The next prime is 128582473. The reversal of 128582471 is 174285821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128582471 - 2¹⁸ = 128320327 is a prime.

It is a super-3 number, since 3×128582471³ (a number of 25 digits) contains 333 as substring.

Together with 128582473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128582473) 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, 64291235 + 64291236.

It is an arithmetic number, because the mean of its divisors is an integer number (64291236).

Almost surely, 2^128582471 is an apocalyptic number.

128582471 is a deficient number, since it is larger than the sum of its proper divisors (1).

128582471 is an equidigital number, since it uses as much as digits as its factorization.

128582471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 38.

The square root of 128582471 is about 11339.4211051535. The cubic root of 128582471 is about 504.7317086158.

The spelling of 128582471 in words is "one hundred twenty-eight million, five hundred eighty-two thousand, four hundred seventy-one".