243145641 has 8 divisors (see below), whose sum is σ = 341257120. Its totient is φ = 153565632.

The previous prime is 243145601. The next prime is 243145681. The reversal of 243145641 is 146541342.

It is an interprime number because it is at equal distance from previous prime (243145601) and next prime (243145681).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243145641 - 2¹⁰ = 243144617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243145599 and 243145608.

It is not an unprimeable number, because it can be changed into a prime (243145601) 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 7 ways as a sum of consecutive naturals, for example, 2132800 + ... + 2132913.

It is an arithmetic number, because the mean of its divisors is an integer number (42657140).

Almost surely, 2^243145641 is an apocalyptic number.

It is an amenable number.

243145641 is a deficient number, since it is larger than the sum of its proper divisors (98111479).

243145641 is a wasteful number, since it uses less digits than its factorization.

243145641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265735.

The product of its digits is 11520, while the sum is 30.

The square root of 243145641 is about 15593.1280056312. The cubic root of 243145641 is about 624.1497909424.

Adding to 243145641 its reverse (146541342), we get a palindrome (389686983).

The spelling of 243145641 in words is "two hundred forty-three million, one hundred forty-five thousand, six hundred forty-one".