243422404 has 27 divisors (see below), whose sum is σ = 442831207. Its totient is φ = 117077408.

The previous prime is 243422401. The next prime is 243422479. The reversal of 243422404 is 404224342.

The square root of 243422404 is 15602.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 56280004 + 187142400 = 7502^2 + 13680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243422401) 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 8 ways as a sum of consecutive naturals, for example, 904782 + ... + 905050.

Almost surely, 2^243422404 is an apocalyptic number.

243422404 is the 15602-nd square number.

It is an amenable number.

243422404 is a deficient number, since it is larger than the sum of its proper divisors (199408803).

243422404 is an equidigital number, since it uses as much as digits as its factorization.

243422404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The cubic root of 243422404 is about 624.3865160970.

Multiplying 243422404 by its sum of digits (25), we get a square (6085560100 = 78010²).

Adding to 243422404 its reverse (404224342), we get a palindrome (647646746).

The spelling of 243422404 in words is "two hundred forty-three million, four hundred twenty-two thousand, four hundred four".