163242081 has 8 divisors (see below), whose sum is σ = 241840160. Its totient is φ = 108828036.

The previous prime is 163242077. The next prime is 163242103. The reversal of 163242081 is 180242361.

163242081 is a `hidden beast` number, since 1 + 632 + 4 + 20 + 8 + 1 = 666.

It is not a de Polignac number, because 163242081 - 2² = 163242077 is a prime.

It is a super-2 number, since 2×163242081² = 53295954018421122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6046003 = 163242081 / (1 + 6 + 3 + 2 + 4 + 2 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163242011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3022975 + ... + 3023028.

It is an arithmetic number, because the mean of its divisors is an integer number (30230020).

Almost surely, 2^163242081 is an apocalyptic number.

It is an amenable number.

163242081 is a deficient number, since it is larger than the sum of its proper divisors (78598079).

163242081 is an equidigital number, since it uses as much as digits as its factorization.

163242081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046012 (or 6046006 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 163242081 is about 12776.6224410053. The cubic root of 163242081 is about 546.5258489085.

The spelling of 163242081 in words is "one hundred sixty-three million, two hundred forty-two thousand, eighty-one".