243026404 has 6 divisors (see below), whose sum is σ = 425296214. Its totient is φ = 121513200.

The previous prime is 243026401. The next prime is 243026431. The reversal of 243026404 is 404620342.

It can be written as a sum of positive squares in only one way, i.e., 210308004 + 32718400 = 14502^2 + 5720^2 .

It is not an unprimeable number, because it can be changed into a prime (243026401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30378297 + ... + 30378304.

Almost surely, 2^243026404 is an apocalyptic number.

It is an amenable number.

243026404 is a deficient number, since it is larger than the sum of its proper divisors (182269810).

243026404 is a wasteful number, since it uses less digits than its factorization.

243026404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60756605 (or 60756603 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 243026404 is about 15589.3041538101. The cubic root of 243026404 is about 624.0477479625.

Adding to 243026404 its reverse (404620342), we get a palindrome (647646746).

The spelling of 243026404 in words is "two hundred forty-three million, twenty-six thousand, four hundred four".