173806042 has 8 divisors (see below), whose sum is σ = 260774100. Its totient is φ = 86881344.

The previous prime is 173806037. The next prime is 173806049. The reversal of 173806042 is 240608371.

It can be written as a sum of positive squares in 2 ways, for example, as 139688761 + 34117281 = 11819^2 + 5841^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 173805995 and 173806013.

It is not an unprimeable number, because it can be changed into a prime (173806049) 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 3 ways as a sum of consecutive naturals, for example, 2434 + ... + 18802.

Almost surely, 2^173806042 is an apocalyptic number.

173806042 is a deficient number, since it is larger than the sum of its proper divisors (86968058).

173806042 is a wasteful number, since it uses less digits than its factorization.

173806042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21680.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 173806042 is about 13183.5519493041. The cubic root of 173806042 is about 558.0695026969.

The spelling of 173806042 in words is "one hundred seventy-three million, eight hundred six thousand, forty-two".