243426426 has 8 divisors (see below), whose sum is σ = 486852864. Its totient is φ = 81142140.

The previous prime is 243426419. The next prime is 243426431. The reversal of 243426426 is 624624342.

243426426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

243426426 is an admirable number.

It is an unprimeable number.

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, 20285530 + ... + 20285541.

It is an arithmetic number, because the mean of its divisors is an integer number (60856608).

Almost surely, 2^243426426 is an apocalyptic number.

243426426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243426426 is a wasteful number, since it uses less digits than its factorization.

243426426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40571076.

The product of its digits is 55296, while the sum is 33.

The square root of 243426426 is about 15602.1288931992. The cubic root of 243426426 is about 624.3899549324.

The spelling of 243426426 in words is "two hundred forty-three million, four hundred twenty-six thousand, four hundred twenty-six".