243133426 has 8 divisors (see below), whose sum is σ = 366017580. Its totient is φ = 121127568.

The previous prime is 243133421. The next prime is 243133433. The reversal of 243133426 is 624331342.

It can be written as a sum of positive squares in 2 ways, for example, as 235653201 + 7480225 = 15351^2 + 2735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-5 number, since 5×243133426⁵ (a number of 43 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 243133394 and 243133403.

It is not an unprimeable number, because it can be changed into a prime (243133421) 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, 218881 + ... + 219988.

Almost surely, 2^243133426 is an apocalyptic number.

243133426 is a deficient number, since it is larger than the sum of its proper divisors (122884154).

243133426 is a wasteful number, since it uses less digits than its factorization.

243133426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439148.

The product of its digits is 10368, while the sum is 28.

The square root of 243133426 is about 15592.7363217621. The cubic root of 243133426 is about 624.1393388839.

Adding to 243133426 its reverse (624331342), we get a palindrome (867464768).

The spelling of 243133426 in words is "two hundred forty-three million, one hundred thirty-three thousand, four hundred twenty-six".