243445126 has 16 divisors (see below), whose sum is σ = 384189120. Its totient is φ = 115542720.

The previous prime is 243445123. The next prime is 243445129. The reversal of 243445126 is 621544342.

It is an interprime number because it is at equal distance from previous prime (243445123) and next prime (243445129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243445121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37086 + ... + 43153.

It is an arithmetic number, because the mean of its divisors is an integer number (24011820).

Almost surely, 2^243445126 is an apocalyptic number.

243445126 is a deficient number, since it is larger than the sum of its proper divisors (140743994).

243445126 is a wasteful number, since it uses less digits than its factorization.

243445126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80319.

The product of its digits is 23040, while the sum is 31.

The square root of 243445126 is about 15602.7281588830. The cubic root of 243445126 is about 624.4059430530.

Adding to 243445126 its reverse (621544342), we get a palindrome (864989468).

The spelling of 243445126 in words is "two hundred forty-three million, four hundred forty-five thousand, one hundred twenty-six".