243765742 has 8 divisors (see below), whose sum is σ = 398889432. Its totient is φ = 110802600.

The previous prime is 243765721. The next prime is 243765779. The reversal of 243765742 is 247567342.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 243765695 and 243765704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5540109 + ... + 5540152.

It is an arithmetic number, because the mean of its divisors is an integer number (49861179).

Almost surely, 2^243765742 is an apocalyptic number.

243765742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243765742 is a deficient number, since it is larger than the sum of its proper divisors (155123690).

243765742 is a wasteful number, since it uses less digits than its factorization.

243765742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11080274.

The product of its digits is 282240, while the sum is 40.

The square root of 243765742 is about 15612.9991353359. Note that the first 3 decimals coincide. The cubic root of 243765742 is about 624.6799359624.

The spelling of 243765742 in words is "two hundred forty-three million, seven hundred sixty-five thousand, seven hundred forty-two".