117120805 has 8 divisors (see below), whose sum is σ = 143973144. Its totient is φ = 91411200.

The previous prime is 117120781. The next prime is 117120823. The reversal of 117120805 is 508021711.

It can be written as a sum of positive squares in 4 ways, for example, as 16499844 + 100620961 = 4062^2 + 10031^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-117120805 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117120805.

It is a congruent number.

It is an unprimeable number.

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, 285456 + ... + 285865.

It is an arithmetic number, because the mean of its divisors is an integer number (17996643).

Almost surely, 2^117120805 is an apocalyptic number.

It is an amenable number.

117120805 is a deficient number, since it is larger than the sum of its proper divisors (26852339).

117120805 is an equidigital number, since it uses as much as digits as its factorization.

117120805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571367.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 117120805 is about 10822.2365987812. The cubic root of 117120805 is about 489.2656012273.

The spelling of 117120805 in words is "one hundred seventeen million, one hundred twenty thousand, eight hundred five".