109242 has 48 divisors (see below), whose sum is σ = 294720. Its totient is φ = 29376.

The previous prime is 109229. The next prime is 109253. The reversal of 109242 is 242901.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109242.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6418 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (6140).

2¹⁰⁹²⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147360).

109242 is an abundant number, since it is smaller than the sum of its proper divisors (185478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109242 is a wasteful number, since it uses less digits than its factorization.

109242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 109242 is about 330.5177756188. The cubic root of 109242 is about 47.8038873375.

It can be divided in two parts, 109 and 242, that added together give a triangular number (351 = T₂₆).

The spelling of 109242 in words is "one hundred nine thousand, two hundred forty-two".