128414109 has 8 divisors (see below), whose sum is σ = 171777760. Its totient is φ = 85329936.

The previous prime is 128414093. The next prime is 128414113. The reversal of 128414109 is 901414821.

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

It is not a de Polignac number, because 128414109 - 2⁴ = 128414093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128414159) 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 7 ways as a sum of consecutive naturals, for example, 68794 + ... + 70635.

It is an arithmetic number, because the mean of its divisors is an integer number (21472220).

Almost surely, 2^128414109 is an apocalyptic number.

It is an amenable number.

128414109 is a deficient number, since it is larger than the sum of its proper divisors (43363651).

128414109 is a wasteful number, since it uses less digits than its factorization.

128414109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139739.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 128414109 is about 11331.9949258725. The cubic root of 128414109 is about 504.5113189174.

The spelling of 128414109 in words is "one hundred twenty-eight million, four hundred fourteen thousand, one hundred nine".