165517242 has 16 divisors (see below), whose sum is σ = 361128672. Its totient is φ = 50156720.

The previous prime is 165517241. The next prime is 165517249. The reversal of 165517242 is 242715561.

165517242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (165517241) 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, 1253853 + ... + 1253984.

It is an arithmetic number, because the mean of its divisors is an integer number (22570542).

Almost surely, 2^165517242 is an apocalyptic number.

165517242 is an abundant number, since it is smaller than the sum of its proper divisors (195611430).

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

165517242 is a wasteful number, since it uses less digits than its factorization.

165517242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507853.

The product of its digits is 16800, while the sum is 33.

The square root of 165517242 is about 12865.3504421761. The cubic root of 165517242 is about 549.0531831253.

The spelling of 165517242 in words is "one hundred sixty-five million, five hundred seventeen thousand, two hundred forty-two".