118286143 has 4 divisors (see below), whose sum is σ = 118664368. Its totient is φ = 117907920.

The previous prime is 118286141. The next prime is 118286167. The reversal of 118286143 is 341682811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341682811 = 241 ⋅1417771.

It is a cyclic number.

It is not a de Polignac number, because 118286143 - 2¹ = 118286141 is a prime.

It is a super-2 number, since 2×118286143² = 27983223251632898, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 118286099 and 118286108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118286141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 188643 + ... + 189268.

It is an arithmetic number, because the mean of its divisors is an integer number (29666092).

Almost surely, 2^118286143 is an apocalyptic number.

118286143 is a deficient number, since it is larger than the sum of its proper divisors (378225).

118286143 is an equidigital number, since it uses as much as digits as its factorization.

118286143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378224.

The product of its digits is 9216, while the sum is 34.

The square root of 118286143 is about 10875.9433154095. The cubic root of 118286143 is about 490.8829602554.

It can be divided in two parts, 11828 and 6143, that added together give a palindrome (17971).

The spelling of 118286143 in words is "one hundred eighteen million, two hundred eighty-six thousand, one hundred forty-three".