128120695 has 32 divisors (see below), whose sum is σ = 170190720. Its totient is φ = 92252160.

The previous prime is 128120689. The next prime is 128120711. The reversal of 128120695 is 596021821.

It is not a de Polignac number, because 128120695 - 2¹³ = 128112503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128120695.

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 31 ways as a sum of consecutive naturals, for example, 136267 + ... + 137203.

It is an arithmetic number, because the mean of its divisors is an integer number (5318460).

Almost surely, 2^128120695 is an apocalyptic number.

128120695 is a deficient number, since it is larger than the sum of its proper divisors (42070025).

128120695 is a wasteful number, since it uses less digits than its factorization.

128120695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 128120695 is about 11319.0412579865. The cubic root of 128120695 is about 504.1267724582.

The spelling of 128120695 in words is "one hundred twenty-eight million, one hundred twenty thousand, six hundred ninety-five".