188242 has 4 divisors (see below), whose sum is σ = 282366. Its totient is φ = 94120.

The previous prime is 188197. The next prime is 188249. The reversal of 188242 is 242881.

188242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242881 = 89 ⋅2729.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 19321 = 411^2 + 139^2 .

It is not an unprimeable number, because it can be changed into a prime (188249) by changing a digit.

188242 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 as a sum of consecutive naturals, namely, 47059 + ... + 47062.

2¹⁸⁸²⁴² is an apocalyptic number.

188242 is a deficient number, since it is larger than the sum of its proper divisors (94124).

188242 is an equidigital number, since it uses as much as digits as its factorization.

188242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94123.

The product of its digits is 1024, while the sum is 25.

The square root of 188242 is about 433.8686437160. The cubic root of 188242 is about 57.3111130166.

The spelling of 188242 in words is "one hundred eighty-eight thousand, two hundred forty-two".