243361042 has 4 divisors (see below), whose sum is σ = 365041566. Its totient is φ = 121680520.

The previous prime is 243361021. The next prime is 243361043. The reversal of 243361042 is 240163342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 222576561 + 20784481 = 14919^2 + 4559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243360998 and 243361016.

It is not an unprimeable number, because it can be changed into a prime (243361043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60840259 + ... + 60840262.

Almost surely, 2^243361042 is an apocalyptic number.

243361042 is a deficient number, since it is larger than the sum of its proper divisors (121680524).

243361042 is a wasteful number, since it uses less digits than its factorization.

243361042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121680523.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 243361042 is about 15600.0333974001. The cubic root of 243361042 is about 624.3340465015.

The spelling of 243361042 in words is "two hundred forty-three million, three hundred sixty-one thousand, forty-two".