42034221021 has 32 divisors (see below), whose sum is σ = 63008047872. Its totient is φ = 24731942400.

The previous prime is 42034221007. The next prime is 42034221043. The reversal of 42034221021 is 12012243024.

It is not a de Polignac number, because 42034221021 - 2²⁹ = 41497350109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42034221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2406921 + ... + 2424321.

It is an arithmetic number, because the mean of its divisors is an integer number (1969001496).

Almost surely, 2^42034221021 is an apocalyptic number.

It is an amenable number.

42034221021 is a deficient number, since it is larger than the sum of its proper divisors (20973826851).

42034221021 is a wasteful number, since it uses less digits than its factorization.

42034221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20133.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42034221021 its reverse (12012243024), we get a palindrome (54046464045).

It can be divided in two parts, 4203 and 4221021, that added together give a palindrome (4225224).

The spelling of 42034221021 in words is "forty-two billion, thirty-four million, two hundred twenty-one thousand, twenty-one".