42106109 has 8 divisors (see below), whose sum is σ = 44499840. Its totient is φ = 39730176.

The previous prime is 42106087. The next prime is 42106133. The reversal of 42106109 is 90160124.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42106109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42105109) 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, 572 + ... + 9194.

It is an arithmetic number, because the mean of its divisors is an integer number (5562480).

Almost surely, 2^42106109 is an apocalyptic number.

It is an amenable number.

42106109 is a deficient number, since it is larger than the sum of its proper divisors (2393731).

42106109 is a wasteful number, since it uses less digits than its factorization.

42106109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8899.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 42106109 is about 6488.9220214147. The cubic root of 42106109 is about 347.8951466596.

The spelling of 42106109 in words is "forty-two million, one hundred six thousand, one hundred nine".