420417443 has 4 divisors (see below), whose sum is σ = 433979328. Its totient is φ = 406855560.

The previous prime is 420417377. The next prime is 420417451. The reversal of 420417443 is 344714024.

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 420417443 - 2⁸ = 420417187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420417143) 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, 6780896 + ... + 6780957.

It is an arithmetic number, because the mean of its divisors is an integer number (108494832).

Almost surely, 2^420417443 is an apocalyptic number.

420417443 is a deficient number, since it is larger than the sum of its proper divisors (13561885).

420417443 is a wasteful number, since it uses less digits than its factorization.

420417443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561884.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 420417443 is about 20504.0835688894. The cubic root of 420417443 is about 749.1352658816.

The spelling of 420417443 in words is "four hundred twenty million, four hundred seventeen thousand, four hundred forty-three".