42530660281 has 2 divisors, whose sum is σ = 42530660282. Its totient is φ = 42530660280.

The previous prime is 42530660269. The next prime is 42530660287. The reversal of 42530660281 is 18206603524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35895091600 + 6635568681 = 189460^2 + 81459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42530660281 is a prime.

It is a super-2 number, since 2×42530660281² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42530660281.

It is not a weakly prime, because it can be changed into another prime (42530660287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265330140 + 21265330141.

It is an arithmetic number, because the mean of its divisors is an integer number (21265330141).

Almost surely, 2^42530660281 is an apocalyptic number.

It is an amenable number.

42530660281 is a deficient number, since it is larger than the sum of its proper divisors (1).

42530660281 is an equidigital number, since it uses as much as digits as its factorization.

42530660281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 42530660281 in words is "forty-two billion, five hundred thirty million, six hundred sixty thousand, two hundred eighty-one".