642005375322 has 8 divisors (see below), whose sum is σ = 1284010750656. Its totient is φ = 214001791772.

The previous prime is 642005375299. The next prime is 642005375369. The reversal of 642005375322 is 223573500246.

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

642005375322 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53500447938 + ... + 53500447949.

It is an arithmetic number, because the mean of its divisors is an integer number (160501343832).

Almost surely, 2^642005375322 is an apocalyptic number.

642005375322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642005375322 is a wasteful number, since it uses less digits than its factorization.

642005375322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107000895892.

The product of its (nonzero) digits is 302400, while the sum is 39.

Adding to 642005375322 its reverse (223573500246), we get a palindrome (865578875568).

The spelling of 642005375322 in words is "six hundred forty-two billion, five million, three hundred seventy-five thousand, three hundred twenty-two".