42323221354243 has 2 divisors, whose sum is σ = 42323221354244. Its totient is φ = 42323221354242.

The previous prime is 42323221354121. The next prime is 42323221354259. The reversal of 42323221354243 is 34245312232324.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42323221354243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42323221354196 and 42323221354205.

It is not a weakly prime, because it can be changed into another prime (42323221354543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21161610677121 + 21161610677122.

It is an arithmetic number, because the mean of its divisors is an integer number (21161610677122).

Almost surely, 2^{42323221354243} is an apocalyptic number.

42323221354243 is a deficient number, since it is larger than the sum of its proper divisors (1).

42323221354243 is an equidigital number, since it uses as much as digits as its factorization.

42323221354243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 40.

Adding to 42323221354243 its reverse (34245312232324), we get a palindrome (76568533586567).

The spelling of 42323221354243 in words is "forty-two trillion, three hundred twenty-three billion, two hundred twenty-one million, three hundred fifty-four thousand, two hundred forty-three".