166012140 has 96 divisors (see below), whose sum is σ = 562512384. Its totient is φ = 35712000.

The previous prime is 166012117. The next prime is 166012151. The reversal of 166012140 is 41210661.

166012140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4486 + ... + 18765.

It is an arithmetic number, because the mean of its divisors is an integer number (5859504).

Almost surely, 2^166012140 is an apocalyptic number.

166012140 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 166012140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281256192).

166012140 is an abundant number, since it is smaller than the sum of its proper divisors (396500244).

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

166012140 is a wasteful number, since it uses less digits than its factorization.

166012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23287 (or 23285 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 166012140 is about 12884.5698414809. The cubic root of 166012140 is about 549.5998632325.

The spelling of 166012140 in words is "one hundred sixty-six million, twelve thousand, one hundred forty".