243540202 has 16 divisors (see below), whose sum is σ = 380457000. Its totient is φ = 116777920.

The previous prime is 243540197. The next prime is 243540211. The reversal of 243540202 is 202045342.

It can be written as a sum of positive squares in 4 ways, for example, as 214066161 + 29474041 = 14631^2 + 5429^2 .

It is a super-3 number, since 3×243540202³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5449 + ... + 22732.

Almost surely, 2^243540202 is an apocalyptic number.

243540202 is a deficient number, since it is larger than the sum of its proper divisors (136916798).

243540202 is a wasteful number, since it uses less digits than its factorization.

243540202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28361.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 243540202 is about 15605.7746363325. The cubic root of 243540202 is about 624.4872184432.

Adding to 243540202 its reverse (202045342), we get a palindrome (445585544).

The spelling of 243540202 in words is "two hundred forty-three million, five hundred forty thousand, two hundred two".