117742585 has 4 divisors (see below), whose sum is σ = 141291108. Its totient is φ = 94194064.

The previous prime is 117742579. The next prime is 117742607. The reversal of 117742585 is 585247711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585247711 = 593 ⋅986927.

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 90117049 = 5256^2 + 9493^2 .

It is a cyclic number.

It is not a de Polignac number, because 117742585 - 2²¹ = 115645433 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11774254 + ... + 11774263.

It is an arithmetic number, because the mean of its divisors is an integer number (35322777).

Almost surely, 2^117742585 is an apocalyptic number.

It is an amenable number.

117742585 is a deficient number, since it is larger than the sum of its proper divisors (23548523).

117742585 is an equidigital number, since it uses as much as digits as its factorization.

117742585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23548522.

The product of its digits is 78400, while the sum is 40.

The square root of 117742585 is about 10850.9255365614. The cubic root of 117742585 is about 490.1298905964.

The spelling of 117742585 in words is "one hundred seventeen million, seven hundred forty-two thousand, five hundred eighty-five".