243420202 has 16 divisors (see below), whose sum is σ = 374274432. Its totient is φ = 118690000.

The previous prime is 243420181. The next prime is 243420211. The reversal of 243420202 is 202024342.

It is a self number, because there is not a number n which added to its sum of digits gives 243420202.

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, 10827 + ... + 24577.

It is an arithmetic number, because the mean of its divisors is an integer number (23392152).

Almost surely, 2^243420202 is an apocalyptic number.

243420202 is a deficient number, since it is larger than the sum of its proper divisors (130854230).

243420202 is a wasteful number, since it uses less digits than its factorization.

243420202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 243420202 is about 15601.9294319645. The cubic root of 243420202 is about 624.3846333571.

Adding to 243420202 its reverse (202024342), we get a palindrome (445444544).

The spelling of 243420202 in words is "two hundred forty-three million, four hundred twenty thousand, two hundred two".