109642 has 8 divisors (see below), whose sum is σ = 177156. Its totient is φ = 50592.

The previous prime is 109639. The next prime is 109661. The reversal of 109642 is 246901.

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 81 = 331^2 + 9^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083 + ... + 2134.

2¹⁰⁹⁶⁴² is an apocalyptic number.

109642 is a deficient number, since it is larger than the sum of its proper divisors (67514).

109642 is a wasteful number, since it uses less digits than its factorization.

109642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 109642 is about 331.1223338889. The cubic root of 109642 is about 47.8621624327.

The spelling of 109642 in words is "one hundred nine thousand, six hundred forty-two".