42020321533 has 8 divisors (see below), whose sum is σ = 43773762560. Its totient is φ = 40291752240.

The previous prime is 42020321521. The next prime is 42020321537. The reversal of 42020321533 is 33512302024.

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 42020321533 - 2¹⁷ = 42020190461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42020321498 and 42020321507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020321537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6214485 + ... + 6221242.

It is an arithmetic number, because the mean of its divisors is an integer number (5471720320).

Almost surely, 2^42020321533 is an apocalyptic number.

It is an amenable number.

42020321533 is a deficient number, since it is larger than the sum of its proper divisors (1753441027).

42020321533 is a wasteful number, since it uses less digits than its factorization.

42020321533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12435867.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 42020321533 its reverse (33512302024), we get a palindrome (75532623557).

The spelling of 42020321533 in words is "forty-two billion, twenty million, three hundred twenty-one thousand, five hundred thirty-three".