642145302050 has 96 divisors (see below), whose sum is σ = 1412572089600. Its totient is φ = 212499221760.

The previous prime is 642145302023. The next prime is 642145302089. The reversal of 642145302050 is 50203541246.

It is a junction number, because it is equal to n+sod(n) for n = 642145301998 and 642145302016.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 35140316 + ... + 35158584.

It is an arithmetic number, because the mean of its divisors is an integer number (14714292600).

Almost surely, 2^642145302050 is an apocalyptic number.

642145302050 is an abundant number, since it is smaller than the sum of its proper divisors (770426787550).

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

642145302050 is a wasteful number, since it uses less digits than its factorization.

642145302050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21780 (or 21775 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 642145302050 its reverse (50203541246), we get a palindrome (692348843296).

The spelling of 642145302050 in words is "six hundred forty-two billion, one hundred forty-five million, three hundred two thousand, fifty".