128714965 has 4 divisors (see below), whose sum is σ = 154457964. Its totient is φ = 102971968.

The previous prime is 128714951. The next prime is 128714983. The reversal of 128714965 is 569417821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94128804 + 34586161 = 9702^2 + 5881^2 .

It is a cyclic number.

It is not a de Polignac number, because 128714965 - 2¹¹ = 128712917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12871492 + ... + 12871501.

It is an arithmetic number, because the mean of its divisors is an integer number (38614491).

Almost surely, 2^128714965 is an apocalyptic number.

It is an amenable number.

128714965 is a deficient number, since it is larger than the sum of its proper divisors (25742999).

128714965 is an equidigital number, since it uses as much as digits as its factorization.

128714965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25742998.

The product of its digits is 120960, while the sum is 43.

The square root of 128714965 is about 11345.2617863141. The cubic root of 128714965 is about 504.9050110527.

The spelling of 128714965 in words is "one hundred twenty-eight million, seven hundred fourteen thousand, nine hundred sixty-five".