117545243 has 4 divisors (see below), whose sum is σ = 117566928. Its totient is φ = 117523560.

The previous prime is 117545221. The next prime is 117545251. The reversal of 117545243 is 342545711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342545711 = 73 ⋅4692407.

It is a cyclic number.

It is not a de Polignac number, because 117545243 - 2⁶ = 117545179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117545213) 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, 5330 + ... + 16232.

It is an arithmetic number, because the mean of its divisors is an integer number (29391732).

Almost surely, 2^117545243 is an apocalyptic number.

117545243 is a deficient number, since it is larger than the sum of its proper divisors (21685).

117545243 is a wasteful number, since it uses less digits than its factorization.

117545243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684.

The product of its digits is 16800, while the sum is 32.

The square root of 117545243 is about 10841.8283974614. The cubic root of 117545243 is about 489.8559107084.

The spelling of 117545243 in words is "one hundred seventeen million, five hundred forty-five thousand, two hundred forty-three".