243120003 has 16 divisors (see below), whose sum is σ = 375545856. Its totient is φ = 137021760.

The previous prime is 243119993. The next prime is 243120041. The reversal of 243120003 is 300021342.

It is not a de Polignac number, because 243120003 - 2⁵ = 243119971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243120083) 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, 77763 + ... + 80828.

It is an arithmetic number, because the mean of its divisors is an integer number (23471616).

Almost surely, 2^243120003 is an apocalyptic number.

243120003 is a deficient number, since it is larger than the sum of its proper divisors (132425853).

243120003 is a wasteful number, since it uses less digits than its factorization.

243120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158674.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 243120003 is about 15592.3058910477. The cubic root of 243120003 is about 624.1278527675.

Adding to 243120003 its reverse (300021342), we get a palindrome (543141345).

The spelling of 243120003 in words is "two hundred forty-three million, one hundred twenty thousand, three".