420419423 has 4 divisors (see below), whose sum is σ = 421905288. Its totient is φ = 418933560.

The previous prime is 420419413. The next prime is 420419429. The reversal of 420419423 is 324914024.

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 420419423 - 2⁴ = 420419407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420419429) 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 3 ways as a sum of consecutive naturals, for example, 742508 + ... + 743073.

It is an arithmetic number, because the mean of its divisors is an integer number (105476322).

Almost surely, 2^420419423 is an apocalyptic number.

420419423 is a deficient number, since it is larger than the sum of its proper divisors (1485865).

420419423 is a wasteful number, since it uses less digits than its factorization.

420419423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485864.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 420419423 is about 20504.1318518976. The cubic root of 420419423 is about 749.1364419234.

The spelling of 420419423 in words is "four hundred twenty million, four hundred nineteen thousand, four hundred twenty-three".