243438041 has 16 divisors (see below), whose sum is σ = 305098368. Its totient is φ = 188697600.

The previous prime is 243438029. The next prime is 243438043. The reversal of 243438041 is 140834342.

It is a de Polignac number, because none of the positive numbers 2^k-243438041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243437995 and 243438013.

It is not an unprimeable number, because it can be changed into a prime (243438043) 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 15 ways as a sum of consecutive naturals, for example, 6671 + ... + 23051.

It is an arithmetic number, because the mean of its divisors is an integer number (19068648).

Almost surely, 2^243438041 is an apocalyptic number.

It is an amenable number.

243438041 is a deficient number, since it is larger than the sum of its proper divisors (61660327).

243438041 is a wasteful number, since it uses less digits than its factorization.

243438041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16592.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 243438041 is about 15602.5011136035. The cubic root of 243438041 is about 624.3998856181.

The spelling of 243438041 in words is "two hundred forty-three million, four hundred thirty-eight thousand, forty-one".