42321430273 has 2 divisors, whose sum is σ = 42321430274. Its totient is φ = 42321430272.

The previous prime is 42321430259. The next prime is 42321430331. The reversal of 42321430273 is 37203412324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34205762704 + 8115667569 = 184948^2 + 90087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42321430273 is a prime.

It is a super-2 number, since 2×42321430273² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42321430573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160715136 + 21160715137.

It is an arithmetic number, because the mean of its divisors is an integer number (21160715137).

Almost surely, 2^42321430273 is an apocalyptic number.

It is an amenable number.

42321430273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42321430273 is an equidigital number, since it uses as much as digits as its factorization.

42321430273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 42321430273 its reverse (37203412324), we get a palindrome (79524842597).

The spelling of 42321430273 in words is "forty-two billion, three hundred twenty-one million, four hundred thirty thousand, two hundred seventy-three".