118261 has 8 divisors (see below), whose sum is σ = 139104. Its totient is φ = 99120.

The previous prime is 118259. The next prime is 118273. The reversal of 118261 is 162811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118261 - 2¹ = 118259 is a prime.

It is a Duffinian number.

118261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (17388).

2¹¹⁸²⁶¹ is an apocalyptic number.

118261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118261 is a deficient number, since it is larger than the sum of its proper divisors (20843).

118261 is a wasteful number, since it uses less digits than its factorization.

118261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its digits is 96, while the sum is 19.

The square root of 118261 is about 343.8909710940. The cubic root of 118261 is about 49.0848176962.

The spelling of 118261 in words is "one hundred eighteen thousand, two hundred sixty-one".