243144145 has 16 divisors (see below), whose sum is σ = 305851392. Its totient is φ = 185351040.

The previous prime is 243144127. The next prime is 243144157. The reversal of 243144145 is 541441342.

It is not a de Polignac number, because 243144145 - 2²⁵ = 209589713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4977 + ... + 22606.

It is an arithmetic number, because the mean of its divisors is an integer number (19115712).

Almost surely, 2^243144145 is an apocalyptic number.

It is an amenable number.

243144145 is a deficient number, since it is larger than the sum of its proper divisors (62707247).

243144145 is a wasteful number, since it uses less digits than its factorization.

243144145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27672.

The product of its digits is 7680, while the sum is 28.

The square root of 243144145 is about 15593.0800357081. The cubic root of 243144145 is about 624.1485108728.

Adding to 243144145 its reverse (541441342), we get a palindrome (784585487).

The spelling of 243144145 in words is "two hundred forty-three million, one hundred forty-four thousand, one hundred forty-five".