243420341 has 4 divisors (see below), whose sum is σ = 243568032. Its totient is φ = 243272652.

The previous prime is 243420337. The next prime is 243420347. The reversal of 243420341 is 143024342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243420341 - 2² = 243420337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243420347) 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 3 ways as a sum of consecutive naturals, for example, 71345 + ... + 74678.

It is an arithmetic number, because the mean of its divisors is an integer number (60892008).

Almost surely, 2^243420341 is an apocalyptic number.

It is an amenable number.

243420341 is a deficient number, since it is larger than the sum of its proper divisors (147691).

243420341 is a wasteful number, since it uses less digits than its factorization.

243420341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147690.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243420341 is about 15601.9338865411. The cubic root of 243420341 is about 624.3847522043.

Adding to 243420341 its reverse (143024342), we get a palindrome (386444683).

The spelling of 243420341 in words is "two hundred forty-three million, four hundred twenty thousand, three hundred forty-one".