165964242 has 8 divisors (see below), whose sum is σ = 331928496. Its totient is φ = 55321412.

The previous prime is 165964237. The next prime is 165964261. The reversal of 165964242 is 242469561.

It is a happy number.

165964242 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

165964242 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 165964242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13830348 + ... + 13830359.

It is an arithmetic number, because the mean of its divisors is an integer number (41491062).

Almost surely, 2^165964242 is an apocalyptic number.

165964242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165964242 is a wasteful number, since it uses less digits than its factorization.

165964242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27660712.

The product of its digits is 103680, while the sum is 39.

The square root of 165964242 is about 12882.7109724623. The cubic root of 165964242 is about 549.5470011017.

The spelling of 165964242 in words is "one hundred sixty-five million, nine hundred sixty-four thousand, two hundred forty-two".