242543221105 has 8 divisors (see below), whose sum is σ = 291054875112. Its totient is φ = 194032570368.

The previous prime is 242543221003. The next prime is 242543221111. The reversal of 242543221105 is 501122345242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104473754176 + 138069466929 = 323224^2 + 371577^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 242543221105 - 2¹¹ = 242543219057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468679 + ... + 839491.

It is an arithmetic number, because the mean of its divisors is an integer number (36381859389).

Almost surely, 2^242543221105 is an apocalyptic number.

It is an amenable number.

242543221105 is a deficient number, since it is larger than the sum of its proper divisors (48511654007).

242543221105 is a wasteful number, since it uses less digits than its factorization.

242543221105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501635.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 242543221105 its reverse (501122345242), we get a palindrome (743665566347).

The spelling of 242543221105 in words is "two hundred forty-two billion, five hundred forty-three million, two hundred twenty-one thousand, one hundred five".