420020343 has 32 divisors (see below), whose sum is σ = 661763520. Its totient is φ = 262379520.

The previous prime is 420020339. The next prime is 420020347. The reversal of 420020343 is 343020024.

420020343 is a `hidden beast` number, since 420 + 0 + 203 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (420020339) and next prime (420020347).

It is not a de Polignac number, because 420020343 - 2² = 420020339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420020347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108721 + ... + 112517.

It is an arithmetic number, because the mean of its divisors is an integer number (20680110).

Almost surely, 2^420020343 is an apocalyptic number.

420020343 is a deficient number, since it is larger than the sum of its proper divisors (241743177).

420020343 is a wasteful number, since it uses less digits than its factorization.

420020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420020343 is about 20494.3978442891. The cubic root of 420020343 is about 748.8993294894.

Adding to 420020343 its reverse (343020024), we get a palindrome (763040367).

The spelling of 420020343 in words is "four hundred twenty million, twenty thousand, three hundred forty-three".