108842 has 4 divisors (see below), whose sum is σ = 163266. Its totient is φ = 54420.

The previous prime is 108827. The next prime is 108863. The reversal of 108842 is 248801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248801 = 7 ⋅35543.

It can be written as a sum of positive squares in only one way, i.e., 72361 + 36481 = 269^2 + 191^2 .

It is an unprimeable number.

108842 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 as a sum of consecutive naturals, namely, 27209 + ... + 27212.

2¹⁰⁸⁸⁴² is an apocalyptic number.

108842 is a deficient number, since it is larger than the sum of its proper divisors (54424).

108842 is an equidigital number, since it uses as much as digits as its factorization.

108842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54423.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 108842 is about 329.9121095080. The cubic root of 108842 is about 47.7454698150.

The spelling of 108842 in words is "one hundred eight thousand, eight hundred forty-two".