421423242203 has 16 divisors (see below), whose sum is σ = 447986073600. Its totient is φ = 395571126720.

The previous prime is 421423242169. The next prime is 421423242241. The reversal of 421423242203 is 302242324124.

It is not a de Polignac number, because 421423242203 - 2²⁴ = 421406464987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421423242703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499238 + ... + 1045028.

It is an arithmetic number, because the mean of its divisors is an integer number (27999129600).

Almost surely, 2^421423242203 is an apocalyptic number.

421423242203 is a deficient number, since it is larger than the sum of its proper divisors (26562831397).

421423242203 is a wasteful number, since it uses less digits than its factorization.

421423242203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546442.

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

Adding to 421423242203 its reverse (302242324124), we get a palindrome (723665566327).

The spelling of 421423242203 in words is "four hundred twenty-one billion, four hundred twenty-three million, two hundred forty-two thousand, two hundred three".