243420030 has 48 divisors (see below), whose sum is σ = 723307104. Its totient is φ = 55638720.

The previous prime is 243419989. The next prime is 243420041. The reversal of 243420030 is 30024342.

243420030 is a `hidden beast` number, since 2 + 434 + 200 + 30 = 666.

It is a super-2 number, since 2×243420030² = 118506622010401800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243419985 and 243420012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192561 + ... + 193820.

It is an arithmetic number, because the mean of its divisors is an integer number (15068898).

Almost surely, 2^243420030 is an apocalyptic number.

243420030 is an abundant number, since it is smaller than the sum of its proper divisors (479887074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243420030 is a wasteful number, since it uses less digits than its factorization.

243420030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386401 (or 386398 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 243420030 is about 15601.9239198248. The cubic root of 243420030 is about 624.3844862943.

Adding to 243420030 its reverse (30024342), we get a palindrome (273444372).

The spelling of 243420030 in words is "two hundred forty-three million, four hundred twenty thousand, thirty".