109042 has 4 divisors (see below), whose sum is σ = 163566. Its totient is φ = 54520.

The previous prime is 109037. The next prime is 109049. The reversal of 109042 is 240901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96721 + 12321 = 311^2 + 111^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (109049) by changing a digit.

109042 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, 27259 + ... + 27262.

2¹⁰⁹⁰⁴² is an apocalyptic number.

109042 is a deficient number, since it is larger than the sum of its proper divisors (54524).

109042 is an equidigital number, since it uses as much as digits as its factorization.

109042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54523.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 109042 is about 330.2150814242. The cubic root of 109042 is about 47.7746964341.

Adding to 109042 its reverse (240901), we get a palindrome (349943).

The spelling of 109042 in words is "one hundred nine thousand, forty-two".