128752487 has 2 divisors, whose sum is σ = 128752488. Its totient is φ = 128752486.

The previous prime is 128752471. The next prime is 128752499. The reversal of 128752487 is 784257821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128752487 - 2⁴ = 128752471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128752457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64376243 + 64376244.

It is an arithmetic number, because the mean of its divisors is an integer number (64376244).

Almost surely, 2^128752487 is an apocalyptic number.

128752487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128752487 is an equidigital number, since it uses as much as digits as its factorization.

128752487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 44.

The square root of 128752487 is about 11346.9153076949. The cubic root of 128752487 is about 504.9540682990.

The spelling of 128752487 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, four hundred eighty-seven".