118771 has 4 divisors (see below), whose sum is σ = 120472. Its totient is φ = 117072.

The previous prime is 118757. The next prime is 118787. The reversal of 118771 is 177811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118771 - 2⁵ = 118739 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (118751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741 + ... + 886.

It is an arithmetic number, because the mean of its divisors is an integer number (30118).

2¹¹⁸⁷⁷¹ is an apocalyptic number.

118771 is a deficient number, since it is larger than the sum of its proper divisors (1701).

118771 is an equidigital number, since it uses as much as digits as its factorization.

118771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 392, while the sum is 25.

The square root of 118771 is about 344.6316874578. The cubic root of 118771 is about 49.1552758572.

The spelling of 118771 in words is "one hundred eighteen thousand, seven hundred seventy-one".