243146441 has 4 divisors (see below), whose sum is σ = 249076884. Its totient is φ = 237216000.

The previous prime is 243146399. The next prime is 243146443. The reversal of 243146441 is 144641342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 192793225 = 7096^2 + 13885^2 .

It is a cyclic number.

It is not a de Polignac number, because 243146441 - 2²² = 238952137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243146443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2965160 + ... + 2965241.

It is an arithmetic number, because the mean of its divisors is an integer number (62269221).

Almost surely, 2^243146441 is an apocalyptic number.

It is an amenable number.

243146441 is a deficient number, since it is larger than the sum of its proper divisors (5930443).

243146441 is an equidigital number, since it uses as much as digits as its factorization.

243146441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930442.

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

The square root of 243146441 is about 15593.1536579359. The cubic root of 243146441 is about 624.1504754694.

Adding to 243146441 its reverse (144641342), we get a palindrome (387787783).

The spelling of 243146441 in words is "two hundred forty-three million, one hundred forty-six thousand, four hundred forty-one".