243242001 has 16 divisors (see below), whose sum is σ = 381556800. Its totient is φ = 152622144.

The previous prime is 243241991. The next prime is 243242017. The reversal of 243242001 is 100242342.

243242001 is a `hidden beast` number, since 243 + 2 + 420 + 0 + 1 = 666.

It is not a de Polignac number, because 243242001 - 2⁵ = 243241969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243242071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264511 + ... + 265428.

It is an arithmetic number, because the mean of its divisors is an integer number (23847300).

Almost surely, 2^243242001 is an apocalyptic number.

It is an amenable number.

243242001 is a deficient number, since it is larger than the sum of its proper divisors (138314799).

243242001 is a wasteful number, since it uses less digits than its factorization.

243242001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529965 (or 529959 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 243242001 is about 15596.2175222071. The cubic root of 243242001 is about 624.2322314231.

Adding to 243242001 its reverse (100242342), we get a palindrome (343484343).

The spelling of 243242001 in words is "two hundred forty-three million, two hundred forty-two thousand, one".