165104212 has 144 divisors (see below), whose sum is σ = 392539392. Its totient is φ = 59304960.

The previous prime is 165104141. The next prime is 165104213. The reversal of 165104212 is 212401561.

165104212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165104213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4026912 + ... + 4026952.

It is an arithmetic number, because the mean of its divisors is an integer number (2725968).

Almost surely, 2^165104212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165104212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196269696).

165104212 is an abundant number, since it is smaller than the sum of its proper divisors (227435180).

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

165104212 is a wasteful number, since it uses less digits than its factorization.

165104212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 165104212 is about 12849.2883849651. The cubic root of 165104212 is about 548.5961021862.

Adding to 165104212 its reverse (212401561), we get a palindrome (377505773).

The spelling of 165104212 in words is "one hundred sixty-five million, one hundred four thousand, two hundred twelve".