642223206103 has 2 divisors, whose sum is σ = 642223206104. Its totient is φ = 642223206102.

The previous prime is 642223206059. The next prime is 642223206151. The reversal of 642223206103 is 301602322246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642223206103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642223206193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321111603051 + 321111603052.

It is an arithmetic number, because the mean of its divisors is an integer number (321111603052).

Almost surely, 2^642223206103 is an apocalyptic number.

642223206103 is a deficient number, since it is larger than the sum of its proper divisors (1).

642223206103 is an equidigital number, since it uses as much as digits as its factorization.

642223206103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 642223206103 its reverse (301602322246), we get a palindrome (943825528349).

The spelling of 642223206103 in words is "six hundred forty-two billion, two hundred twenty-three million, two hundred six thousand, one hundred three".