243742858 has 8 divisors (see below), whose sum is σ = 370764000. Its totient is φ = 120154860.

The previous prime is 243742853. The next prime is 243742879. The reversal of 243742858 is 858247342.

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

It is not an unprimeable number, because it can be changed into a prime (243742853) 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 3 ways as a sum of consecutive naturals, for example, 858108 + ... + 858391.

It is an arithmetic number, because the mean of its divisors is an integer number (46345500).

Almost surely, 2^243742858 is an apocalyptic number.

243742858 is a deficient number, since it is larger than the sum of its proper divisors (127021142).

243742858 is a wasteful number, since it uses less digits than its factorization.

243742858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716572.

The product of its digits is 430080, while the sum is 43.

The square root of 243742858 is about 15612.2662672656. The cubic root of 243742858 is about 624.6603876550.

The spelling of 243742858 in words is "two hundred forty-three million, seven hundred forty-two thousand, eight hundred fifty-eight".