118566241 has 4 divisors (see below), whose sum is σ = 121770772. Its totient is φ = 115361712.

The previous prime is 118566221. The next prime is 118566263. The reversal of 118566241 is 142665811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142665811 = 223 ⋅639757.

It can be written as a sum of positive squares in 2 ways, for example, as 42510400 + 76055841 = 6520^2 + 8721^2 .

It is a cyclic number.

It is not a de Polignac number, because 118566241 - 2⁷ = 118566113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118566197 and 118566206.

It is not an unprimeable number, because it can be changed into a prime (118566221) 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, 1602210 + ... + 1602283.

It is an arithmetic number, because the mean of its divisors is an integer number (30442693).

Almost surely, 2^118566241 is an apocalyptic number.

It is an amenable number.

118566241 is a deficient number, since it is larger than the sum of its proper divisors (3204531).

118566241 is an equidigital number, since it uses as much as digits as its factorization.

118566241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204530.

The product of its digits is 11520, while the sum is 34.

The square root of 118566241 is about 10888.8126533612. The cubic root of 118566241 is about 491.2701201436.

The spelling of 118566241 in words is "one hundred eighteen million, five hundred sixty-six thousand, two hundred forty-one".