423040203243 has 24 divisors (see below), whose sum is σ = 698612648448. Its totient is φ = 241647062832.

The previous prime is 423040203227. The next prime is 423040203253. The reversal of 423040203243 is 342302040324.

423040203243 is a `hidden beast` number, since 4 + 230 + 402 + 0 + 3 + 24 + 3 = 666.

It is not a de Polignac number, because 423040203243 - 2⁴ = 423040203227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423040203253) 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 23 ways as a sum of consecutive naturals, for example, 1082355 + ... + 1420412.

It is an arithmetic number, because the mean of its divisors is an integer number (29108860352).

Almost surely, 2^423040203243 is an apocalyptic number.

423040203243 is a deficient number, since it is larger than the sum of its proper divisors (275572445205).

423040203243 is a wasteful number, since it uses less digits than its factorization.

423040203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505463 (or 2505460 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 423040203243 its reverse (342302040324), we get a palindrome (765342243567).

The spelling of 423040203243 in words is "four hundred twenty-three billion, forty million, two hundred three thousand, two hundred forty-three".