243400422 has 32 divisors (see below), whose sum is σ = 509990400. Its totient is φ = 77339808.

The previous prime is 243400403. The next prime is 243400427. The reversal of 243400422 is 224004342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243400427) 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 in 15 ways as a sum of consecutive naturals, for example, 4893 + ... + 22599.

It is an arithmetic number, because the mean of its divisors is an integer number (15937200).

Almost surely, 2^243400422 is an apocalyptic number.

243400422 is an abundant number, since it is smaller than the sum of its proper divisors (266589978).

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

243400422 is a wasteful number, since it uses less digits than its factorization.

243400422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 243400422 is about 15601.2955231288. The cubic root of 243400422 is about 624.3677206789.

Adding to 243400422 its reverse (224004342), we get a palindrome (467404764).

The spelling of 243400422 in words is "two hundred forty-three million, four hundred thousand, four hundred twenty-two".