128135034 has 20 divisors (see below), whose sum is σ = 287117754. Its totient is φ = 42711624.

The previous prime is 128135017. The next prime is 128135039. The reversal of 128135034 is 430531821.

It is a happy number.

128135034 is a `hidden beast` number, since 1 + 281 + 350 + 34 = 666.

It can be written as a sum of positive squares in only one way, i.e., 127577025 + 558009 = 11295^2 + 747^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 128134989 and 128135007.

It is not an unprimeable number, because it can be changed into a prime (128135039) 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 in 9 ways as a sum of consecutive naturals, for example, 395317 + ... + 395640.

Almost surely, 2^128135034 is an apocalyptic number.

128135034 is an abundant number, since it is smaller than the sum of its proper divisors (158982720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128135034 is an equidigital number, since it uses as much as digits as its factorization.

128135034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790971 (or 790962 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 128135034 is about 11319.6746419674. The cubic root of 128135034 is about 504.1455786943.

Adding to 128135034 its reverse (430531821), we get a palindrome (558666855).

It can be divided in two parts, 1281 and 35034, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 128135034 in words is "one hundred twenty-eight million, one hundred thirty-five thousand, thirty-four".