642488118341 has 4 divisors (see below), whose sum is σ = 642492785184. Its totient is φ = 642483451500.

The previous prime is 642488118287. The next prime is 642488118361. The reversal of 642488118341 is 143811884246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 642488118341 - 2⁶ = 642488118277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 642488118341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642488118361) 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 3 ways as a sum of consecutive naturals, for example, 2120435 + ... + 2404416.

It is an arithmetic number, because the mean of its divisors is an integer number (160623196296).

Almost surely, 2^642488118341 is an apocalyptic number.

It is an amenable number.

642488118341 is a deficient number, since it is larger than the sum of its proper divisors (4666843).

642488118341 is a wasteful number, since it uses less digits than its factorization.

642488118341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666842.

The product of its digits is 1179648, while the sum is 50.

The spelling of 642488118341 in words is "six hundred forty-two billion, four hundred eighty-eight million, one hundred eighteen thousand, three hundred forty-one".