173742109 has 8 divisors (see below), whose sum is σ = 177230592. Its totient is φ = 170261520.

The previous prime is 173742089. The next prime is 173742113. The reversal of 173742109 is 901247371.

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-173742109 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 (173742809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63912 + ... + 66574.

It is an arithmetic number, because the mean of its divisors is an integer number (22153824).

Almost surely, 2^173742109 is an apocalyptic number.

It is an amenable number.

173742109 is a deficient number, since it is larger than the sum of its proper divisors (3488483).

173742109 is a wasteful number, since it uses less digits than its factorization.

173742109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 173742109 is about 13181.1270003744. The cubic root of 173742109 is about 558.0010673446.

The spelling of 173742109 in words is "one hundred seventy-three million, seven hundred forty-two thousand, one hundred nine".