420432343 has 12 divisors (see below), whose sum is σ = 444448440. Its totient is φ = 397237232.

The previous prime is 420432329. The next prime is 420432359. The reversal of 420432343 is 343234024.

It is a de Polignac number, because none of the positive numbers 2^k-420432343 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 (420432373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60780 + ... + 67342.

It is an arithmetic number, because the mean of its divisors is an integer number (37037370).

Almost surely, 2^420432343 is an apocalyptic number.

420432343 is a deficient number, since it is larger than the sum of its proper divisors (24016097).

420432343 is an equidigital number, since it uses as much as digits as its factorization.

420432343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686 (or 6639 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 420432343 is about 20504.4469079271. The cubic root of 420432343 is about 749.1441158027.

Adding to 420432343 its reverse (343234024), we get a palindrome (763666367).

The spelling of 420432343 in words is "four hundred twenty million, four hundred thirty-two thousand, three hundred forty-three".