117817241 has 4 divisors (see below), whose sum is σ = 118242852. Its totient is φ = 117391632.

The previous prime is 117817237. The next prime is 117817279. The reversal of 117817241 is 142718711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142718711 = 61 ⋅2339651.

It can be written as a sum of positive squares in 2 ways, for example, as 69222400 + 48594841 = 8320^2 + 6971^2 .

It is a cyclic number.

It is not a de Polignac number, because 117817241 - 2² = 117817237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117817198 and 117817207.

It is not an unprimeable number, because it can be changed into a prime (117817211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212390 + ... + 212943.

It is an arithmetic number, because the mean of its divisors is an integer number (29560713).

Almost surely, 2^117817241 is an apocalyptic number.

It is an amenable number.

117817241 is a deficient number, since it is larger than the sum of its proper divisors (425611).

117817241 is an equidigital number, since it uses as much as digits as its factorization.

117817241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425610.

The product of its digits is 3136, while the sum is 32.

The square root of 117817241 is about 10854.3650666448. The cubic root of 117817241 is about 490.2334594855.

The spelling of 117817241 in words is "one hundred seventeen million, eight hundred seventeen thousand, two hundred forty-one".