42105221532050 has 12 divisors (see below), whose sum is σ = 78315712049706. Its totient is φ = 16842088612800.

The previous prime is 42105221531939. The next prime is 42105221532091. The reversal of 42105221532050 is 5023512250124.

It can be written as a sum of positive squares in 3 ways, for example, as 38924110288561 + 3181111243489 = 6238919^2 + 1783567^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42105221531998 and 42105221532016.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421052215271 + ... + 421052215370.

Almost surely, 2^{42105221532050} is an apocalyptic number.

42105221532050 is a deficient number, since it is larger than the sum of its proper divisors (36210490517656).

42105221532050 is a wasteful number, since it uses less digits than its factorization.

42105221532050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842104430653 (or 842104430648 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 42105221532050 its reverse (5023512250124), we get a palindrome (47128733782174).

The spelling of 42105221532050 in words is "forty-two trillion, one hundred five billion, two hundred twenty-one million, five hundred thirty-two thousand, fifty".