420144430223 has 24 divisors (see below), whose sum is σ = 490250630592. Its totient is φ = 359011747584.

The previous prime is 420144430163. The next prime is 420144430241. The reversal of 420144430223 is 322034441024.

It is not a de Polignac number, because 420144430223 - 2²² = 420140235919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420144430283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26706986 + ... + 26722712.

It is an arithmetic number, because the mean of its divisors is an integer number (20427109608).

Almost surely, 2^420144430223 is an apocalyptic number.

420144430223 is a deficient number, since it is larger than the sum of its proper divisors (70106200369).

420144430223 is a wasteful number, since it uses less digits than its factorization.

420144430223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17391 (or 17384 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 420144430223 its reverse (322034441024), we get a palindrome (742178871247).

The spelling of 420144430223 in words is "four hundred twenty billion, one hundred forty-four million, four hundred thirty thousand, two hundred twenty-three".