87742 has 8 divisors (see below), whose sum is σ = 138600. Its totient is φ = 41544.

The previous prime is 87739. The next prime is 87743. The reversal of 87742 is 24778.

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

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87743) by changing a digit.

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, 1117 + ... + 1192.

It is an arithmetic number, because the mean of its divisors is an integer number (17325).

2⁸⁷⁷⁴² is an apocalyptic number.

87742 is a deficient number, since it is larger than the sum of its proper divisors (50858).

87742 is a wasteful number, since it uses less digits than its factorization.

87742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330.

The product of its digits is 3136, while the sum is 28.

The square root of 87742 is about 296.2127613726. The cubic root of 87742 is about 44.4360905595.

It can be divided in two parts, 877 and 42, that added together give a palindrome (919).

The spelling of 87742 in words is "eighty-seven thousand, seven hundred forty-two".