84742 has 8 divisors (see below), whose sum is σ = 145296. Its totient is φ = 36312.

The previous prime is 84737. The next prime is 84751. The reversal of 84742 is 24748.

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

It is a congruent number.

It is an unprimeable number.

84742 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3013 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (18162).

2⁸⁴⁷⁴² is an apocalyptic number.

84742 is a deficient number, since it is larger than the sum of its proper divisors (60554).

84742 is a wasteful number, since it uses less digits than its factorization.

84742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062.

The product of its digits is 1792, while the sum is 25.

The square root of 84742 is about 291.1047921282. The cubic root of 84742 is about 43.9237660658.

The spelling of 84742 in words is "eighty-four thousand, seven hundred forty-two".