243439242 has 16 divisors (see below), whose sum is σ = 487423872. Its totient is φ = 81055520.

The previous prime is 243439223. The next prime is 243439247. The reversal of 243439242 is 242934342.

It is not an unprimeable number, because it can be changed into a prime (243439247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16803 + ... + 27734.

It is an arithmetic number, because the mean of its divisors is an integer number (30463992).

Almost surely, 2^243439242 is an apocalyptic number.

243439242 is an abundant number, since it is smaller than the sum of its proper divisors (243984630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243439242 is a wasteful number, since it uses less digits than its factorization.

243439242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45453.

The product of its digits is 41472, while the sum is 33.

The square root of 243439242 is about 15602.5396009752. The cubic root of 243439242 is about 624.4009124407.

The spelling of 243439242 in words is "two hundred forty-three million, four hundred thirty-nine thousand, two hundred forty-two".