642241550241 has 8 divisors (see below), whose sum is σ = 951468963360. Its totient is φ = 428161033476.

The previous prime is 642241550231. The next prime is 642241550243. The reversal of 642241550241 is 142055142246.

642241550241 is a `hidden beast` number, since 6 + 4 + 22 + 41 + 550 + 2 + 41 = 666.

It is not a de Polignac number, because 642241550241 - 2¹⁰ = 642241549217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642241550196 and 642241550205.

It is not an unprimeable number, because it can be changed into a prime (642241550243) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 11893362015 + ... + 11893362068.

It is an arithmetic number, because the mean of its divisors is an integer number (118933620420).

Almost surely, 2^642241550241 is an apocalyptic number.

It is an amenable number.

642241550241 is a deficient number, since it is larger than the sum of its proper divisors (309227413119).

642241550241 is a wasteful number, since it uses less digits than its factorization.

642241550241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23786724092 (or 23786724086 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 642241550241 its reverse (142055142246), we get a palindrome (784296692487).

The spelling of 642241550241 in words is "six hundred forty-two billion, two hundred forty-one million, five hundred fifty thousand, two hundred forty-one".