42020530061 has 2 divisors, whose sum is σ = 42020530062. Its totient is φ = 42020530060.

The previous prime is 42020530003. The next prime is 42020530063. The reversal of 42020530061 is 16003502024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30701697961 + 11318832100 = 175219^2 + 106390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42020530061 is a prime.

Together with 42020530063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42020530063) 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 as a sum of consecutive naturals, namely, 21010265030 + 21010265031.

It is an arithmetic number, because the mean of its divisors is an integer number (21010265031).

Almost surely, 2^42020530061 is an apocalyptic number.

It is an amenable number.

42020530061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42020530061 is an equidigital number, since it uses as much as digits as its factorization.

42020530061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 42020530061 in words is "forty-two billion, twenty million, five hundred thirty thousand, sixty-one".