243310242 has 32 divisors (see below), whose sum is σ = 558277632. Its totient is φ = 69249744.

The previous prime is 243310217. The next prime is 243310337. The reversal of 243310242 is 242013342.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (17446176).

Almost surely, 2^243310242 is an apocalyptic number.

243310242 is an abundant number, since it is smaller than the sum of its proper divisors (314967390).

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

243310242 is a wasteful number, since it uses less digits than its factorization.

243310242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22302.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243310242 is about 15598.4051107798. The cubic root of 243310242 is about 624.2906016176.

Adding to 243310242 its reverse (242013342), we get a palindrome (485323584).

The spelling of 243310242 in words is "two hundred forty-three million, three hundred ten thousand, two hundred forty-two".