243423450 has 72 divisors (see below), whose sum is σ = 657154368. Its totient is φ = 64599840.

The previous prime is 243423449. The next prime is 243423451. The reversal of 243423450 is 54324342.

243423450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243423449) and next prime (243423451).

It is not an unprimeable number, because it can be changed into a prime (243423451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 100959 + ... + 103341.

It is an arithmetic number, because the mean of its divisors is an integer number (9127144).

Almost surely, 2^243423450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243423450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328577184).

243423450 is an abundant number, since it is smaller than the sum of its proper divisors (413730918).

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

243423450 is a wasteful number, since it uses less digits than its factorization.

243423450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2620 counting only the distinct ones).

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

The square root of 243423450 is about 15602.0335213074. The cubic root of 243423450 is about 624.3874104373.

Adding to 243423450 its reverse (54324342), we get a palindrome (297747792).

The spelling of 243423450 in words is "two hundred forty-three million, four hundred twenty-three thousand, four hundred fifty".