17666042 has 8 divisors (see below), whose sum is σ = 26522100. Its totient is φ = 8825344.

The previous prime is 17666041. The next prime is 17666053. The reversal of 17666042 is 24066671.

It can be written as a sum of positive squares in 2 ways, for example, as 14600041 + 3066001 = 3821^2 + 1751^2 .

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

It is not an unprimeable number, because it can be changed into a prime (17666041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317 + ... + 5952.

Almost surely, 2^17666042 is an apocalyptic number.

17666042 is a deficient number, since it is larger than the sum of its proper divisors (8856058).

17666042 is a wasteful number, since it uses less digits than its factorization.

17666042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 17666042 is about 4203.0990947157. The cubic root of 17666042 is about 260.4432380382.

The spelling of 17666042 in words is "seventeen million, six hundred sixty-six thousand, forty-two".