166342120 has 64 divisors (see below), whose sum is σ = 434793600. Its totient is φ = 56090880.

The previous prime is 166342109. The next prime is 166342139. The reversal of 166342120 is 21243661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12211 + ... + 21949.

It is an arithmetic number, because the mean of its divisors is an integer number (6793650).

Almost surely, 2^166342120 is an apocalyptic number.

166342120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166342120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217396800).

166342120 is an abundant number, since it is smaller than the sum of its proper divisors (268451480).

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

166342120 is a wasteful number, since it uses less digits than its factorization.

166342120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9818 (or 9814 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 166342120 is about 12897.3687238909. The cubic root of 166342120 is about 549.9637662080.

Adding to 166342120 its reverse (21243661), we get a palindrome (187585781).

The spelling of 166342120 in words is "one hundred sixty-six million, three hundred forty-two thousand, one hundred twenty".