42303430321 has 2 divisors, whose sum is σ = 42303430322. Its totient is φ = 42303430320.

The previous prime is 42303430307. The next prime is 42303430417. The reversal of 42303430321 is 12303430324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35630337600 + 6673092721 = 188760^2 + 81689^2 .

It is a cyclic number.

It is not a de Polignac number, because 42303430321 - 2¹⁹ = 42302906033 is a prime.

It is not a weakly prime, because it can be changed into another prime (42303433321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21151715160 + 21151715161.

It is an arithmetic number, because the mean of its divisors is an integer number (21151715161).

Almost surely, 2^42303430321 is an apocalyptic number.

It is an amenable number.

42303430321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42303430321 is an equidigital number, since it uses as much as digits as its factorization.

42303430321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 42303430321 its reverse (12303430324), we get a palindrome (54606860645).

The spelling of 42303430321 in words is "forty-two billion, three hundred three million, four hundred thirty thousand, three hundred twenty-one".