128487503 has 2 divisors, whose sum is σ = 128487504. Its totient is φ = 128487502.

The previous prime is 128487497. The next prime is 128487509. The reversal of 128487503 is 305784821.

It is a balanced prime because it is at equal distance from previous prime (128487497) and next prime (128487509).

It is an emirp because it is prime and its reverse (305784821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128487503 - 2¹⁶ = 128421967 is a prime.

It is equal to p_7297049 and since 128487503 and 7297049 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128487509) 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, 64243751 + 64243752.

It is an arithmetic number, because the mean of its divisors is an integer number (64243752).

Almost surely, 2^128487503 is an apocalyptic number.

128487503 is a deficient number, since it is larger than the sum of its proper divisors (1).

128487503 is an equidigital number, since it uses as much as digits as its factorization.

128487503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 128487503 is about 11335.2328163122. The cubic root of 128487503 is about 504.6074170069.

The spelling of 128487503 in words is "one hundred twenty-eight million, four hundred eighty-seven thousand, five hundred three".