243392041 has 4 divisors (see below), whose sum is σ = 251784900. Its totient is φ = 234999184.

The previous prime is 243392029. The next prime is 243392053. The reversal of 243392041 is 140293342.

243392041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (243392029) and next prime (243392053).

It can be written as a sum of positive squares in 2 ways, for example, as 130416400 + 112975641 = 11420^2 + 10629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243392041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243392011) 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, 4196386 + ... + 4196443.

It is an arithmetic number, because the mean of its divisors is an integer number (62946225).

Almost surely, 2^243392041 is an apocalyptic number.

It is an amenable number.

243392041 is a deficient number, since it is larger than the sum of its proper divisors (8392859).

243392041 is an equidigital number, since it uses as much as digits as its factorization.

243392041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8392858.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 243392041 is about 15601.0269213280. The cubic root of 243392041 is about 624.3605543179.

The spelling of 243392041 in words is "two hundred forty-three million, three hundred ninety-two thousand, forty-one".