642441210422 has 8 divisors (see below), whose sum is σ = 1051267435272. Its totient is φ = 292018732000.

The previous prime is 642441210421. The next prime is 642441210427. The reversal of 642441210422 is 224012144246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642441210421) 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, 14600936579 + ... + 14600936622.

It is an arithmetic number, because the mean of its divisors is an integer number (131408429409).

Almost surely, 2^642441210422 is an apocalyptic number.

642441210422 is a deficient number, since it is larger than the sum of its proper divisors (408826224850).

642441210422 is a wasteful number, since it uses less digits than its factorization.

642441210422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29201873214.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 642441210422 its reverse (224012144246), we get a palindrome (866453354668).

The spelling of 642441210422 in words is "six hundred forty-two billion, four hundred forty-one million, two hundred ten thousand, four hundred twenty-two".