243532242 has 48 divisors (see below), whose sum is σ = 561906072. Its totient is φ = 75962880.

The previous prime is 243532241. The next prime is 243532319. The reversal of 243532242 is 242235342.

It is a happy number.

243532242 is a `hidden beast` number, since 2 + 435 + 3 + 224 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 166952241 + 76580001 = 12921^2 + 8751^2 .

It is a super-3 number, since 3×243532242³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (243532241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53188 + ... + 57584.

Almost surely, 2^243532242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243532242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280953036).

243532242 is an abundant number, since it is smaller than the sum of its proper divisors (318373830).

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

243532242 is a wasteful number, since it uses less digits than its factorization.

243532242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603 (or 4600 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 243532242 is about 15605.5196004491. The cubic root of 243532242 is about 624.4804146761.

Adding to 243532242 its reverse (242235342), we get a palindrome (485767584).

The spelling of 243532242 in words is "two hundred forty-three million, five hundred thirty-two thousand, two hundred forty-two".