165140000 has 120 divisors (see below), whose sum is σ = 425113920. Its totient is φ = 63008000.

The previous prime is 165139987. The next prime is 165140011. The reversal of 165140000 is 41561.

It is a happy number.

165140000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 459821 + ... + 460179.

It is an arithmetic number, because the mean of its divisors is an integer number (3542616).

Almost surely, 2^165140000 is an apocalyptic number.

165140000 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 165140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212556960).

165140000 is an abundant number, since it is smaller than the sum of its proper divisors (259973920).

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

165140000 is an equidigital number, since it uses as much as digits as its factorization.

165140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 165140000 is about 12850.6809158114. The cubic root of 165140000 is about 548.6357372318.

Adding to 165140000 its reverse (41561), we get a palindrome (165181561).

The spelling of 165140000 in words is "one hundred sixty-five million, one hundred forty thousand".