243420334 has 8 divisors (see below), whose sum is σ = 373622040. Its totient is φ = 118879656.

The previous prime is 243420329. The next prime is 243420337. The reversal of 243420334 is 433024342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 243420299 and 243420308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243420337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415149 + ... + 1415320.

It is an arithmetic number, because the mean of its divisors is an integer number (46702755).

Almost surely, 2^243420334 is an apocalyptic number.

243420334 is a deficient number, since it is larger than the sum of its proper divisors (130201706).

243420334 is a wasteful number, since it uses less digits than its factorization.

243420334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830514.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 243420334 is about 15601.9336622100. The cubic root of 243420334 is about 624.3847462192.

Adding to 243420334 its reverse (433024342), we get a palindrome (676444676).

The spelling of 243420334 in words is "two hundred forty-three million, four hundred twenty thousand, three hundred thirty-four".