243234656426 has 4 divisors (see below), whose sum is σ = 364851984642. Its totient is φ = 121617328212.

The previous prime is 243234656411. The next prime is 243234656443. The reversal of 243234656426 is 624656432342.

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

It can be written as a sum of positive squares in only one way, i.e., 242295295225 + 939361201 = 492235^2 + 30649^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60808664105 + ... + 60808664108.

Almost surely, 2^243234656426 is an apocalyptic number.

243234656426 is a deficient number, since it is larger than the sum of its proper divisors (121617328216).

243234656426 is a wasteful number, since it uses less digits than its factorization.

243234656426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121617328215.

The product of its digits is 4976640, while the sum is 47.

The spelling of 243234656426 in words is "two hundred forty-three billion, two hundred thirty-four million, six hundred fifty-six thousand, four hundred twenty-six".