109142 has 16 divisors (see below), whose sum is σ = 184464. Its totient is φ = 48400.

The previous prime is 109141. The next prime is 109147. The reversal of 109142 is 241901.

It is a happy number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 109142.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109142.

It is not an unprimeable number, because it can be changed into a prime (109141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642 + ... + 2682.

It is an arithmetic number, because the mean of its divisors is an integer number (11529).

2¹⁰⁹¹⁴² is an apocalyptic number.

109142 is a deficient number, since it is larger than the sum of its proper divisors (75322).

109142 is an equidigital number, since it uses as much as digits as its factorization.

109142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 109142 is about 330.3664631890. The cubic root of 109142 is about 47.7892963435.

The spelling of 109142 in words is "one hundred nine thousand, one hundred forty-two".