243421141 has 16 divisors (see below), whose sum is σ = 265507200. Its totient is φ = 222393600.

The previous prime is 243421133. The next prime is 243421169. The reversal of 243421141 is 141124342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 243421141 - 2³ = 243421133 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 (243401141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67576 + ... + 71086.

It is an arithmetic number, because the mean of its divisors is an integer number (16594200).

Almost surely, 2^243421141 is an apocalyptic number.

It is an amenable number.

243421141 is a deficient number, since it is larger than the sum of its proper divisors (22086059).

243421141 is a wasteful number, since it uses less digits than its factorization.

243421141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660.

The product of its digits is 768, while the sum is 22.

The square root of 243421141 is about 15601.9595243674. The cubic root of 243421141 is about 624.3854362162.

Adding to 243421141 its reverse (141124342), we get a palindrome (384545483).

The spelling of 243421141 in words is "two hundred forty-three million, four hundred twenty-one thousand, one hundred forty-one".