420514220023 has 4 divisors (see below), whose sum is σ = 420993712600. Its totient is φ = 420034727448.

The previous prime is 420514219987. The next prime is 420514220039. The reversal of 420514220023 is 320022415024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420514220023 - 2²⁹ = 419977349111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420514220023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420514220123) 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 in 3 ways as a sum of consecutive naturals, for example, 239744973 + ... + 239746726.

It is an arithmetic number, because the mean of its divisors is an integer number (105248428150).

Almost surely, 2^420514220023 is an apocalyptic number.

420514220023 is a deficient number, since it is larger than the sum of its proper divisors (479492577).

420514220023 is an equidigital number, since it uses as much as digits as its factorization.

420514220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479492576.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 420514220023 its reverse (320022415024), we get a palindrome (740536635047).

The spelling of 420514220023 in words is "four hundred twenty billion, five hundred fourteen million, two hundred twenty thousand, twenty-three".