243144404 has 12 divisors (see below), whose sum is σ = 450532404. Its totient is φ = 114420864.

The previous prime is 243144401. The next prime is 243144409. The reversal of 243144404 is 404441342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 220581904 + 22562500 = 14852^2 + 4750^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243144401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787759 + ... + 1787894.

It is an arithmetic number, because the mean of its divisors is an integer number (37544367).

Almost surely, 2^243144404 is an apocalyptic number.

It is an amenable number.

243144404 is a deficient number, since it is larger than the sum of its proper divisors (207388000).

243144404 is a wasteful number, since it uses less digits than its factorization.

243144404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575674 (or 3575672 counting only the distinct ones).

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

The square root of 243144404 is about 15593.0883406720. The cubic root of 243144404 is about 624.1487324895.

Adding to 243144404 its reverse (404441342), we get a palindrome (647585746).

The spelling of 243144404 in words is "two hundred forty-three million, one hundred forty-four thousand, four hundred four".