20442315043 has 2 divisors, whose sum is σ = 20442315044. Its totient is φ = 20442315042.

The previous prime is 20442315017. The next prime is 20442315121. The reversal of 20442315043 is 34051324402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442315043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20443315043) 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, 10221157521 + 10221157522.

It is an arithmetic number, because the mean of its divisors is an integer number (10221157522).

Almost surely, 2^20442315043 is an apocalyptic number.

20442315043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442315043 is an equidigital number, since it uses as much as digits as its factorization.

20442315043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20442315043 its reverse (34051324402), we get a palindrome (54493639445).

The spelling of 20442315043 in words is "twenty billion, four hundred forty-two million, three hundred fifteen thousand, forty-three".