168100140 has 96 divisors (see below), whose sum is σ = 515342016. Its totient is φ = 40688640.

The previous prime is 168100109. The next prime is 168100147. The reversal of 168100140 is 41001861.

It is not an unprimeable number, because it can be changed into a prime (168100147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45814 + ... + 49346.

It is an arithmetic number, because the mean of its divisors is an integer number (5368146).

Almost surely, 2^168100140 is an apocalyptic number.

168100140 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 168100140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257671008).

168100140 is an abundant number, since it is smaller than the sum of its proper divisors (347241876).

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

168100140 is a wasteful number, since it uses less digits than its factorization.

168100140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 168100140 is about 12965.3438056999. The cubic root of 168100140 is about 551.8944478918.

The spelling of 168100140 in words is "one hundred sixty-eight million, one hundred thousand, one hundred forty".