242721189467201 has 4 divisors (see below), whose sum is σ = 242794719064404. Its totient is φ = 242647659870000.

The previous prime is 242721189467191. The next prime is 242721189467203. The reversal of 242721189467201 is 102764981127242.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13628021308225 + 229093168158976 = 3691615^2 + 15135824^2 .

It is a cyclic number.

It is not a de Polignac number, because 242721189467201 - 2⁶ = 242721189467137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242721189467203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36764793650 + ... + 36764800251.

It is an arithmetic number, because the mean of its divisors is an integer number (60698679766101).

Almost surely, 2^{242721189467201} is an apocalyptic number.

It is an amenable number.

242721189467201 is a deficient number, since it is larger than the sum of its proper divisors (73529597203).

242721189467201 is an equidigital number, since it uses as much as digits as its factorization.

242721189467201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73529597202.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 242721189467201 in words is "two hundred forty-two trillion, seven hundred twenty-one billion, one hundred eighty-nine million, four hundred sixty-seven thousand, two hundred one".