166012120 has 32 divisors (see below), whose sum is σ = 393188400. Its totient is φ = 62909568.

The previous prime is 166012117. The next prime is 166012151. The reversal of 166012120 is 21210661.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108459 + ... + 109978.

Almost surely, 2^166012120 is an apocalyptic number.

166012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166012120 is an abundant number, since it is smaller than the sum of its proper divisors (227176280).

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

166012120 is a wasteful number, since it uses less digits than its factorization.

166012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218467 (or 218463 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 166012120 is about 12884.5690653588. The cubic root of 166012120 is about 549.5998411618.

Adding to 166012120 its reverse (21210661), we get a palindrome (187222781).

It can be divided in two parts, 16601 and 2120, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 166012120 in words is "one hundred sixty-six million, twelve thousand, one hundred twenty".