243142436 has 6 divisors (see below), whose sum is σ = 425499270. Its totient is φ = 121571216.

The previous prime is 243142433. The next prime is 243142447. The reversal of 243142436 is 634241342.

It can be written as a sum of positive squares in only one way, i.e., 210424036 + 32718400 = 14506^2 + 5720^2 .

It is a super-3 number, since 3×243142436³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243142399 and 243142408.

It is not an unprimeable number, because it can be changed into a prime (243142433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30392801 + ... + 30392808.

It is an arithmetic number, because the mean of its divisors is an integer number (70916545).

Almost surely, 2^243142436 is an apocalyptic number.

It is an amenable number.

243142436 is a deficient number, since it is larger than the sum of its proper divisors (182356834).

243142436 is a wasteful number, since it uses less digits than its factorization.

243142436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60785613 (or 60785611 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 243142436 is about 15593.0252356623. The cubic root of 243142436 is about 624.1470485410.

Adding to 243142436 its reverse (634241342), we get a palindrome (877383778).

The spelling of 243142436 in words is "two hundred forty-three million, one hundred forty-two thousand, four hundred thirty-six".