118642 has 8 divisors (see below), whose sum is σ = 179676. Its totient is φ = 58752.

The previous prime is 118633. The next prime is 118661. The reversal of 118642 is 246811.

It can be written as a sum of positive squares in 2 ways, for example, as 114921 + 3721 = 339^2 + 61^2 .

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

It is an unprimeable number.

118642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58 + ... + 490.

2¹¹⁸⁶⁴² is an apocalyptic number.

118642 is a deficient number, since it is larger than the sum of its proper divisors (61034).

118642 is a wasteful number, since it uses less digits than its factorization.

118642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its digits is 384, while the sum is 22.

The square root of 118642 is about 344.4444802867. Note that the first 4 decimals coincide. The cubic root of 118642 is about 49.1374731733.

The spelling of 118642 in words is "one hundred eighteen thousand, six hundred forty-two".