243642332 has 6 divisors (see below), whose sum is σ = 426374088. Its totient is φ = 121821164.

The previous prime is 243642323. The next prime is 243642337. The reversal of 243642332 is 233246342.

It is a junction number, because it is equal to n+sod(n) for n = 243642295 and 243642304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243642337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30455288 + ... + 30455295.

It is an arithmetic number, because the mean of its divisors is an integer number (71062348).

Almost surely, 2^243642332 is an apocalyptic number.

It is an amenable number.

243642332 is a deficient number, since it is larger than the sum of its proper divisors (182731756).

243642332 is a wasteful number, since it uses less digits than its factorization.

243642332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60910587 (or 60910585 counting only the distinct ones).

The product of its digits is 20736, while the sum is 29.

The square root of 243642332 is about 15609.0464795259. The cubic root of 243642332 is about 624.5745003592.

Adding to 243642332 its reverse (233246342), we get a palindrome (476888674).

The spelling of 243642332 in words is "two hundred forty-three million, six hundred forty-two thousand, three hundred thirty-two".