17666142 has 32 divisors (see below), whose sum is σ = 38229408. Its totient is φ = 5410176.

The previous prime is 17666141. The next prime is 17666147. The reversal of 17666142 is 24166671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17666141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22468 + ... + 23240.

It is an arithmetic number, because the mean of its divisors is an integer number (1194669).

Almost surely, 2^17666142 is an apocalyptic number.

17666142 is an abundant number, since it is smaller than the sum of its proper divisors (20563266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17666142 is a wasteful number, since it uses less digits than its factorization.

17666142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its digits is 12096, while the sum is 33.

The square root of 17666142 is about 4203.1109906830. The cubic root of 17666142 is about 260.4437294570.

The spelling of 17666142 in words is "seventeen million, six hundred sixty-six thousand, one hundred forty-two".