42033040021 has 16 divisors (see below), whose sum is σ = 48261185280. Its totient is φ = 35861143680.

The previous prime is 42033040019. The next prime is 42033040051. The reversal of 42033040021 is 12004033024.

42033040021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42033040021 - 2¹ = 42033040019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42033040051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303920 + ... + 1335766.

It is an arithmetic number, because the mean of its divisors is an integer number (3016324080).

Almost surely, 2^42033040021 is an apocalyptic number.

It is an amenable number.

42033040021 is a deficient number, since it is larger than the sum of its proper divisors (6228145259).

42033040021 is a wasteful number, since it uses less digits than its factorization.

42033040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32724.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 42033040021 its reverse (12004033024), we get a palindrome (54037073045).

The spelling of 42033040021 in words is "forty-two billion, thirty-three million, forty thousand, twenty-one".