163253242 has 8 divisors (see below), whose sum is σ = 245334132. Its totient is φ = 81475200.

The previous prime is 163253221. The next prime is 163253243. The reversal of 163253242 is 242352361.

It can be written as a sum of positive squares in 2 ways, for example, as 137334961 + 25918281 = 11719^2 + 5091^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 163253242.

It is not an unprimeable number, because it can be changed into a prime (163253243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 74359 + ... + 76522.

Almost surely, 2^163253242 is an apocalyptic number.

163253242 is a deficient number, since it is larger than the sum of its proper divisors (82080890).

163253242 is a wasteful number, since it uses less digits than its factorization.

163253242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151424.

The product of its digits is 8640, while the sum is 28.

The square root of 163253242 is about 12777.0592078146. The cubic root of 163253242 is about 546.5383041038.

The spelling of 163253242 in words is "one hundred sixty-three million, two hundred fifty-three thousand, two hundred forty-two".