243403042 has 16 divisors (see below), whose sum is σ = 388825272. Its totient is φ = 113877760.

The previous prime is 243403037. The next prime is 243403049. The reversal of 243403042 is 240304342.

It can be written as a sum of positive squares in 4 ways, for example, as 243079281 + 323761 = 15591^2 + 569^2 .

It is not an unprimeable number, because it can be changed into a prime (243403049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14809 + ... + 26572.

Almost surely, 2^243403042 is an apocalyptic number.

243403042 is a deficient number, since it is larger than the sum of its proper divisors (145422230).

243403042 is a wasteful number, since it uses less digits than its factorization.

243403042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41573.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 243403042 is about 15601.3794902887. The cubic root of 243403042 is about 624.3699609347.

Adding to 243403042 its reverse (240304342), we get a palindrome (483707384).

The spelling of 243403042 in words is "two hundred forty-three million, four hundred three thousand, forty-two".