87842 has 8 divisors (see below), whose sum is σ = 133056. Its totient is φ = 43492.

The previous prime is 87833. The next prime is 87853. The reversal of 87842 is 24878.

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

It is an unprimeable number.

87842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 465.

It is an arithmetic number, because the mean of its divisors is an integer number (16632).

2⁸⁷⁸⁴² is an apocalyptic number.

87842 is a deficient number, since it is larger than the sum of its proper divisors (45214).

87842 is a wasteful number, since it uses less digits than its factorization.

87842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 3584, while the sum is 29.

The square root of 87842 is about 296.3815108943. The cubic root of 87842 is about 44.4529654958.

It can be divided in two parts, 87 and 842, that added together give a palindrome (929).

The spelling of 87842 in words is "eighty-seven thousand, eight hundred forty-two".