128126975 has 12 divisors (see below), whose sum is σ = 167240040. Its totient is φ = 97106400.

The previous prime is 128126969. The next prime is 128126983. The reversal of 128126975 is 579621821.

It is not a de Polignac number, because 128126975 - 2¹⁸ = 127864831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134396 + ... + 135345.

It is an arithmetic number, because the mean of its divisors is an integer number (13936670).

Almost surely, 2^128126975 is an apocalyptic number.

128126975 is a deficient number, since it is larger than the sum of its proper divisors (39113065).

128126975 is a wasteful number, since it uses less digits than its factorization.

128126975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269770 (or 269765 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 128126975 is about 11319.3186632412. The cubic root of 128126975 is about 504.1350091301.

The spelling of 128126975 in words is "one hundred twenty-eight million, one hundred twenty-six thousand, nine hundred seventy-five".