42240440323 has 2 divisors, whose sum is σ = 42240440324. Its totient is φ = 42240440322.

The previous prime is 42240440317. The next prime is 42240440327. The reversal of 42240440323 is 32304404224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42240440323 - 2⁹ = 42240439811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42240440291 and 42240440300.

It is not a weakly prime, because it can be changed into another prime (42240440327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21120220161 + 21120220162.

It is an arithmetic number, because the mean of its divisors is an integer number (21120220162).

Almost surely, 2^42240440323 is an apocalyptic number.

42240440323 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240440323 is an equidigital number, since it uses as much as digits as its factorization.

42240440323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42240440323 its reverse (32304404224), we get a palindrome (74544844547).

The spelling of 42240440323 in words is "forty-two billion, two hundred forty million, four hundred forty thousand, three hundred twenty-three".