420424310203 has 4 divisors (see below), whose sum is σ = 434921700240. Its totient is φ = 405926920168.

The previous prime is 420424310191. The next prime is 420424310249. The reversal of 420424310203 is 302013424024.

It is a happy number.

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 420424310203 - 2⁹ = 420424309691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420424310903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7248694975 + ... + 7248695032.

It is an arithmetic number, because the mean of its divisors is an integer number (108730425060).

Almost surely, 2^420424310203 is an apocalyptic number.

420424310203 is a deficient number, since it is larger than the sum of its proper divisors (14497390037).

420424310203 is a wasteful number, since it uses less digits than its factorization.

420424310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14497390036.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 420424310203 its reverse (302013424024), we get a palindrome (722437734227).

The spelling of 420424310203 in words is "four hundred twenty billion, four hundred twenty-four million, three hundred ten thousand, two hundred three".