420424403 has 8 divisors (see below), whose sum is σ = 480828672. Its totient is φ = 360106056.

The previous prime is 420424391. The next prime is 420424409. The reversal of 420424403 is 304424024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420424403 - 2¹⁶ = 420358867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420424409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10625 + ... + 30882.

It is an arithmetic number, because the mean of its divisors is an integer number (60103584).

Almost surely, 2^420424403 is an apocalyptic number.

420424403 is a deficient number, since it is larger than the sum of its proper divisors (60404269).

420424403 is a wasteful number, since it uses less digits than its factorization.

420424403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42961.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 420424403 is about 20504.2532904761. The cubic root of 420424403 is about 749.1393998305.

Adding to 420424403 its reverse (304424024), we get a palindrome (724848427).

The spelling of 420424403 in words is "four hundred twenty million, four hundred twenty-four thousand, four hundred three".