243420214 has 4 divisors (see below), whose sum is σ = 365130324. Its totient is φ = 121710106.

The previous prime is 243420211. The next prime is 243420223. The reversal of 243420214 is 412024342.

It is a happy number.

243420214 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243420211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855052 + ... + 60855055.

It is an arithmetic number, because the mean of its divisors is an integer number (91282581).

Almost surely, 2^243420214 is an apocalyptic number.

243420214 is a deficient number, since it is larger than the sum of its proper divisors (121710110).

243420214 is a wasteful number, since it uses less digits than its factorization.

243420214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121710109.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 243420214 is about 15601.9298165323. The cubic root of 243420214 is about 624.3846436173.

Adding to 243420214 its reverse (412024342), we get a palindrome (655444556).

The spelling of 243420214 in words is "two hundred forty-three million, four hundred twenty thousand, two hundred fourteen".