166500120 has 32 divisors (see below), whose sum is σ = 499500720. Its totient is φ = 44400000.

The previous prime is 166500119. The next prime is 166500137. The reversal of 166500120 is 21005661.

It is a happy number.

166500120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693631 + ... + 693870.

Almost surely, 2^166500120 is an apocalyptic number.

166500120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166500120 is an abundant number, since it is smaller than the sum of its proper divisors (333000600).

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

166500120 is a wasteful number, since it uses less digits than its factorization.

166500120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387515 (or 1387511 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 166500120 is about 12903.4925504687. The cubic root of 166500120 is about 550.1378387308.

Adding to 166500120 its reverse (21005661), we get a palindrome (187505781).

The spelling of 166500120 in words is "one hundred sixty-six million, five hundred thousand, one hundred twenty".