165424122 has 48 divisors (see below), whose sum is σ = 374250240. Its totient is φ = 52747200.

The previous prime is 165424117. The next prime is 165424159. The reversal of 165424122 is 221424561.

165424122 is a `hidden beast` number, since 1 + 654 + 2 + 4 + 1 + 2 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47997 + ... + 51327.

It is an arithmetic number, because the mean of its divisors is an integer number (7796880).

Almost surely, 2^165424122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165424122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187125120).

165424122 is an abundant number, since it is smaller than the sum of its proper divisors (208826118).

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

165424122 is a wasteful number, since it uses less digits than its factorization.

165424122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459 (or 3456 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 165424122 is about 12861.7309099514. The cubic root of 165424122 is about 548.9501980365.

Adding to 165424122 its reverse (221424561), we get a palindrome (386848683).

The spelling of 165424122 in words is "one hundred sixty-five million, four hundred twenty-four thousand, one hundred twenty-two".