243421514 has 24 divisors (see below), whose sum is σ = 428968548. Its totient is φ = 103286400.

The previous prime is 243421511. The next prime is 243421531. The reversal of 243421514 is 415124342.

It can be written as a sum of positive squares in 2 ways, for example, as 242580625 + 840889 = 15575^2 + 917^2 .

It is not an unprimeable number, because it can be changed into a prime (243421511) 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 11 ways as a sum of consecutive naturals, for example, 2399 + ... + 22194.

Almost surely, 2^243421514 is an apocalyptic number.

243421514 is a deficient number, since it is larger than the sum of its proper divisors (185547034).

243421514 is a wasteful number, since it uses less digits than its factorization.

243421514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24710 (or 24703 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 243421514 is about 15601.9714779896. The cubic root of 243421514 is about 624.3857551363.

Adding to 243421514 its reverse (415124342), we get a palindrome (658545856).

The spelling of 243421514 in words is "two hundred forty-three million, four hundred twenty-one thousand, five hundred fourteen".