128429075 has 24 divisors (see below), whose sum is σ = 169356720. Its totient is φ = 96336000.

The previous prime is 128429039. The next prime is 128429087. The reversal of 128429075 is 570924821.

It is not a de Polignac number, because 128429075 - 2¹² = 128424979 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46637 + ... + 49313.

It is an arithmetic number, because the mean of its divisors is an integer number (7056530).

Almost surely, 2^128429075 is an apocalyptic number.

128429075 is a deficient number, since it is larger than the sum of its proper divisors (40927645).

128429075 is a wasteful number, since it uses less digits than its factorization.

128429075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 128429075 is about 11332.6552493226. The cubic root of 128429075 is about 504.5309175507.

The spelling of 128429075 in words is "one hundred twenty-eight million, four hundred twenty-nine thousand, seventy-five".