420430221422503 has 2 divisors, whose sum is σ = 420430221422504. Its totient is φ = 420430221422502.

The previous prime is 420430221422441. The next prime is 420430221422527. The reversal of 420430221422503 is 305224122034024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420430221422503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420430221422903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210215110711251 + 210215110711252.

It is an arithmetic number, because the mean of its divisors is an integer number (210215110711252).

Almost surely, 2^{420430221422503} is an apocalyptic number.

420430221422503 is a deficient number, since it is larger than the sum of its proper divisors (1).

420430221422503 is an equidigital number, since it uses as much as digits as its factorization.

420430221422503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 420430221422503 its reverse (305224122034024), we get a palindrome (725654343456527).

The spelling of 420430221422503 in words is "four hundred twenty trillion, four hundred thirty billion, two hundred twenty-one million, four hundred twenty-two thousand, five hundred three".