42021122533 has 8 divisors (see below), whose sum is σ = 45653991768. Its totient is φ = 38445464064.

The previous prime is 42021122531. The next prime is 42021122543. The reversal of 42021122533 is 33522112024.

It can be written as a sum of positive squares in 4 ways, for example, as 222546724 + 41798575809 = 14918^2 + 204447^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42021122533 - 2¹ = 42021122531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42021122498 and 42021122507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021122531) 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 7 ways as a sum of consecutive naturals, for example, 14301160 + ... + 14304097.

It is an arithmetic number, because the mean of its divisors is an integer number (5706748971).

Almost surely, 2^42021122533 is an apocalyptic number.

It is an amenable number.

42021122533 is a deficient number, since it is larger than the sum of its proper divisors (3632869235).

42021122533 is a wasteful number, since it uses less digits than its factorization.

42021122533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28605383.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 42021122533 its reverse (33522112024), we get a palindrome (75543234557).

The spelling of 42021122533 in words is "forty-two billion, twenty-one million, one hundred twenty-two thousand, five hundred thirty-three".