420403423 has 8 divisors (see below), whose sum is σ = 464905296. Its totient is φ = 376948800.

The previous prime is 420403411. The next prime is 420403429. The reversal of 420403423 is 324304024.

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 420403423 - 2¹³ = 420395231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420403394 and 420403403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420403429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260968 + ... + 262573.

It is an arithmetic number, because the mean of its divisors is an integer number (58113162).

Almost surely, 2^420403423 is an apocalyptic number.

420403423 is a deficient number, since it is larger than the sum of its proper divisors (44501873).

420403423 is a wasteful number, since it uses less digits than its factorization.

420403423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523625.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 420403423 is about 20503.7416829222. The cubic root of 420403423 is about 749.1269384494.

Adding to 420403423 its reverse (324304024), we get a palindrome (744707447).

The spelling of 420403423 in words is "four hundred twenty million, four hundred three thousand, four hundred twenty-three".