128135794 has 8 divisors (see below), whose sum is σ = 192417408. Its totient is φ = 63996660.

The previous prime is 128135663. The next prime is 128135797. The reversal of 128135794 is 497531821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (128135797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33342 + ... + 36985.

It is an arithmetic number, because the mean of its divisors is an integer number (24052176).

Almost surely, 2^128135794 is an apocalyptic number.

128135794 is a deficient number, since it is larger than the sum of its proper divisors (64281614).

128135794 is an equidigital number, since it uses as much as digits as its factorization.

128135794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71240.

The product of its digits is 60480, while the sum is 40.

The square root of 128135794 is about 11319.7082117871. The cubic root of 128135794 is about 504.1465754290.

The spelling of 128135794 in words is "one hundred twenty-eight million, one hundred thirty-five thousand, seven hundred ninety-four".