162168140 has 24 divisors (see below), whose sum is σ = 345638832. Its totient is φ = 63898560.

The previous prime is 162168121. The next prime is 162168143. The reversal of 162168140 is 41861261.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (162168143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59171 + ... + 61850.

It is an arithmetic number, because the mean of its divisors is an integer number (14401618).

Almost surely, 2^162168140 is an apocalyptic number.

162168140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162168140 is an abundant number, since it is smaller than the sum of its proper divisors (183470692).

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

162168140 is a wasteful number, since it uses less digits than its factorization.

162168140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121097 (or 121095 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 162168140 is about 12734.5255113805. The cubic root of 162168140 is about 545.3247118088.

The spelling of 162168140 in words is "one hundred sixty-two million, one hundred sixty-eight thousand, one hundred forty".