42302021242321 has 2 divisors, whose sum is σ = 42302021242322. Its totient is φ = 42302021242320.

The previous prime is 42302021242289. The next prime is 42302021242363. The reversal of 42302021242321 is 12324212020324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42197184516096 + 104836726225 = 6495936^2 + 323785^2 .

It is a cyclic number.

It is not a de Polignac number, because 42302021242321 - 2⁵ = 42302021242289 is a prime.

It is a super-2 number, since 2×42302021242321² (a number of 28 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 42302021242321.

It is not a weakly prime, because it can be changed into another prime (42302021242381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21151010621160 + 21151010621161.

It is an arithmetic number, because the mean of its divisors is an integer number (21151010621161).

Almost surely, 2^{42302021242321} is an apocalyptic number.

It is an amenable number.

42302021242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42302021242321 is an equidigital number, since it uses as much as digits as its factorization.

42302021242321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 42302021242321 its reverse (12324212020324), we get a palindrome (54626233262645).

The spelling of 42302021242321 in words is "forty-two trillion, three hundred two billion, twenty-one million, two hundred forty-two thousand, three hundred twenty-one".