420220003123 has 2 divisors, whose sum is σ = 420220003124. Its totient is φ = 420220003122.

The previous prime is 420220003117. The next prime is 420220003153. The reversal of 420220003123 is 321300022024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420220003123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420220003123.

It is not a weakly prime, because it can be changed into another prime (420220003153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210110001561 + 210110001562.

It is an arithmetic number, because the mean of its divisors is an integer number (210110001562).

Almost surely, 2^420220003123 is an apocalyptic number.

420220003123 is a deficient number, since it is larger than the sum of its proper divisors (1).

420220003123 is an equidigital number, since it uses as much as digits as its factorization.

420220003123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 420220003123 its reverse (321300022024), we get a palindrome (741520025147).

The spelling of 420220003123 in words is "four hundred twenty billion, two hundred twenty million, three thousand, one hundred twenty-three".