104128005 has 16 divisors (see below), whose sum is σ = 166889664. Its totient is φ = 55440000.

The previous prime is 104128001. The next prime is 104128019. The reversal of 104128005 is 500821401.

It is not a de Polignac number, because 104128005 - 2² = 104128001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104128001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3630 + ... + 14880.

It is an arithmetic number, because the mean of its divisors is an integer number (10430604).

Almost surely, 2^104128005 is an apocalyptic number.

104128005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104128005 is a deficient number, since it is larger than the sum of its proper divisors (62761659).

104128005 is a wasteful number, since it uses less digits than its factorization.

104128005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11876.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 104128005 is about 10204.3130587022. The cubic root of 104128005 is about 470.4597960033.

Adding to 104128005 its reverse (500821401), we get a palindrome (604949406).

The spelling of 104128005 in words is "one hundred four million, one hundred twenty-eight thousand, five".