173666042 has 16 divisors (see below), whose sum is σ = 299138400. Its totient is φ = 74784240.

The previous prime is 173666041. The next prime is 173666047. The reversal of 173666042 is 240666371.

It is a junction number, because it is equal to n+sod(n) for n = 173665993 and 173666011.

It is not an unprimeable number, because it can be changed into a prime (173666041) 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, 207317 + ... + 208152.

It is an arithmetic number, because the mean of its divisors is an integer number (18696150).

Almost surely, 2^173666042 is an apocalyptic number.

173666042 is a deficient number, since it is larger than the sum of its proper divisors (125472358).

173666042 is a wasteful number, since it uses less digits than its factorization.

173666042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415501.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 173666042 is about 13178.2412331843. The cubic root of 173666042 is about 557.9196216061.

The spelling of 173666042 in words is "one hundred seventy-three million, six hundred sixty-six thousand, forty-two".