242621543306 has 16 divisors (see below), whose sum is σ = 378432405000. Its totient is φ = 116520757248.

The previous prime is 242621543291. The next prime is 242621543317. The reversal of 242621543306 is 603345126242.

It can be written as a sum of positive squares in 4 ways, for example, as 148213450225 + 94408093081 = 384985^2 + 307259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 242621543306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10825931 + ... + 10848318.

Almost surely, 2^242621543306 is an apocalyptic number.

242621543306 is a deficient number, since it is larger than the sum of its proper divisors (135810861694).

242621543306 is a wasteful number, since it uses less digits than its factorization.

242621543306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21674473.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 242621543306 its reverse (603345126242), we get a palindrome (845966669548).

The spelling of 242621543306 in words is "two hundred forty-two billion, six hundred twenty-one million, five hundred forty-three thousand, three hundred six".