166642110 has 56 divisors (see below), whose sum is σ = 449747640. Its totient is φ = 44435952.

The previous prime is 166642097. The next prime is 166642111. The reversal of 166642110 is 11246661.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166642111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4140 + ... + 18719.

Almost surely, 2^166642110 is an apocalyptic number.

166642110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166642110 is an abundant number, since it is smaller than the sum of its proper divisors (283105530).

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

166642110 is an equidigital number, since it uses as much as digits as its factorization.

166642110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22884 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 166642110 is about 12908.9933767122. The cubic root of 166642110 is about 550.2941787126.

Adding to 166642110 its reverse (11246661), we get a palindrome (177888771).

The spelling of 166642110 in words is "one hundred sixty-six million, six hundred forty-two thousand, one hundred ten".