99942 has 8 divisors (see below), whose sum is σ = 199896. Its totient is φ = 33312.

The previous prime is 99929. The next prime is 99961. The reversal of 99942 is 24999.

It is a happy number.

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

99942 is an admirable number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

99942 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, 8323 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (24987).

2⁹⁹⁹⁴² is an apocalyptic number.

99942 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99948).

99942 is a wasteful number, since it uses less digits than its factorization.

99942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16662.

The product of its digits is 5832, while the sum is 33.

The square root of 99942 is about 316.1360466635. The cubic root of 99942 is about 46.4069128622.

The spelling of 99942 in words is "ninety-nine thousand, nine hundred forty-two".