187242 has 16 divisors (see below), whose sum is σ = 408672. Its totient is φ = 56720.

The previous prime is 187237. The next prime is 187273. The reversal of 187242 is 242781.

It is an Ulam number.

It is a nialpdrome in base 8.

It is an unprimeable number.

187242 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 7 ways as a sum of consecutive naturals, for example, 1353 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (25542).

2¹⁸⁷²⁴² is an apocalyptic number.

187242 is an abundant number, since it is smaller than the sum of its proper divisors (221430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187242 is a wasteful number, since it uses less digits than its factorization.

187242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its digits is 896, while the sum is 24.

The square root of 187242 is about 432.7146866008. The cubic root of 187242 is about 57.2094479642.

It can be divided in two parts, 187 and 242, that multiplied together give a palindrome (45254).

The spelling of 187242 in words is "one hundred eighty-seven thousand, two hundred forty-two".