42020230320421 has 16 divisors (see below), whose sum is σ = 42849785906928. Its totient is φ = 41195349043200.

The previous prime is 42020230320349. The next prime is 42020230320437. The reversal of 42020230320421 is 12402303202024.

42020230320421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 19257922908225 + 22762307412196 = 4388385^2 + 4770986^2 .

It is a cyclic number.

It is not a de Polignac number, because 42020230320421 - 2⁷ = 42020230320293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020230320451) 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 15 ways as a sum of consecutive naturals, for example, 36682581 + ... + 37810741.

It is an arithmetic number, because the mean of its divisors is an integer number (2678111619183).

Almost surely, 2^{42020230320421} is an apocalyptic number.

It is an amenable number.

42020230320421 is a deficient number, since it is larger than the sum of its proper divisors (829555586507).

42020230320421 is a wasteful number, since it uses less digits than its factorization.

42020230320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130232.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42020230320421 its reverse (12402303202024), we get a palindrome (54422533522445).

The spelling of 42020230320421 in words is "forty-two trillion, twenty billion, two hundred thirty million, three hundred twenty thousand, four hundred twenty-one".