243118742 has 4 divisors (see below), whose sum is σ = 364678116. Its totient is φ = 121559370.

The previous prime is 243118741. The next prime is 243118747. The reversal of 243118742 is 247811342.

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

It is a junction number, because it is equal to n+sod(n) for n = 243118699 and 243118708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243118741) 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 as a sum of consecutive naturals, namely, 60779684 + ... + 60779687.

It is an arithmetic number, because the mean of its divisors is an integer number (91169529).

Almost surely, 2^243118742 is an apocalyptic number.

243118742 is a deficient number, since it is larger than the sum of its proper divisors (121559374).

243118742 is a wasteful number, since it uses less digits than its factorization.

243118742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121559373.

The product of its digits is 10752, while the sum is 32.

The square root of 243118742 is about 15592.2654543847. The cubic root of 243118742 is about 624.1267737029.

The spelling of 243118742 in words is "two hundred forty-three million, one hundred eighteen thousand, seven hundred forty-two".