165475242 has 12 divisors (see below), whose sum is σ = 358529730. Its totient is φ = 55158408.

The previous prime is 165475213. The next prime is 165475253. The reversal of 165475242 is 242574561.

It is a happy number.

165475242 is a `hidden beast` number, since 165 + 475 + 24 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 142348761 + 23126481 = 11931^2 + 4809^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165475197 and 165475206.

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 5 ways as a sum of consecutive naturals, for example, 4596517 + ... + 4596552.

Almost surely, 2^165475242 is an apocalyptic number.

165475242 is an abundant number, since it is smaller than the sum of its proper divisors (193054488).

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

165475242 is a wasteful number, since it uses less digits than its factorization.

165475242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9193077 (or 9193074 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 165475242 is about 12863.7180472832. The cubic root of 165475242 is about 549.0067384484.

The spelling of 165475242 in words is "one hundred sixty-five million, four hundred seventy-five thousand, two hundred forty-two".