243421244 has 24 divisors (see below), whose sum is σ = 480740400. Its totient is φ = 106830080.

The previous prime is 243421193. The next prime is 243421247. The reversal of 243421244 is 442124342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243421247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94109 + ... + 96660.

It is an arithmetic number, because the mean of its divisors is an integer number (20030850).

Almost surely, 2^243421244 is an apocalyptic number.

It is an amenable number.

243421244 is a deficient number, since it is larger than the sum of its proper divisors (237319156).

243421244 is a wasteful number, since it uses less digits than its factorization.

243421244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190813 (or 190811 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 243421244 is about 15601.9628252345. The cubic root of 243421244 is about 624.3855242827.

Adding to 243421244 its reverse (442124342), we get a palindrome (685545586).

The spelling of 243421244 in words is "two hundred forty-three million, four hundred twenty-one thousand, two hundred forty-four".