420411440023 has 2 divisors, whose sum is σ = 420411440024. Its totient is φ = 420411440022.

The previous prime is 420411440021. The next prime is 420411440041. The reversal of 420411440023 is 320044114024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420411440023 - 2¹ = 420411440021 is a prime.

Together with 420411440021, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420411440023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420411440021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210205720011 + 210205720012.

It is an arithmetic number, because the mean of its divisors is an integer number (210205720012).

Almost surely, 2^420411440023 is an apocalyptic number.

420411440023 is a deficient number, since it is larger than the sum of its proper divisors (1).

420411440023 is an equidigital number, since it uses as much as digits as its factorization.

420411440023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 420411440023 its reverse (320044114024), we get a palindrome (740455554047).

The spelling of 420411440023 in words is "four hundred twenty billion, four hundred eleven million, four hundred forty thousand, twenty-three".