181842 has 8 divisors (see below), whose sum is σ = 363696. Its totient is φ = 60612.

The previous prime is 181837. The next prime is 181871. The reversal of 181842 is 248181.

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

181842 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15148 + ... + 15159.

It is an arithmetic number, because the mean of its divisors is an integer number (45462).

2¹⁸¹⁸⁴² is an apocalyptic number.

181842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

181842 is a wasteful number, since it uses less digits than its factorization.

181842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30312.

The product of its digits is 512, while the sum is 24.

The square root of 181842 is about 426.4293610904. The cubic root of 181842 is about 56.6541071743.

The spelling of 181842 in words is "one hundred eighty-one thousand, eight hundred forty-two".