242100201605 has 8 divisors (see below), whose sum is σ = 290523051000. Its totient is φ = 193678288576.

The previous prime is 242100201601. The next prime is 242100201631. The reversal of 242100201605 is 506102001242.

It is a happy number.

242100201605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 84286283041 + 157813918564 = 290321^2 + 397258^2 .

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 242100201605 - 2² = 242100201601 is a prime.

It is a super-2 number, since 2×242100201605² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242100201601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614171 + ... + 928119.

It is an arithmetic number, because the mean of its divisors is an integer number (36315381375).

Almost surely, 2^242100201605 is an apocalyptic number.

It is an amenable number.

242100201605 is a deficient number, since it is larger than the sum of its proper divisors (48422849395).

242100201605 is a wasteful number, since it uses less digits than its factorization.

242100201605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468183.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 242100201605 its reverse (506102001242), we get a palindrome (748202202847).

The spelling of 242100201605 in words is "two hundred forty-two billion, one hundred million, two hundred one thousand, six hundred five".