420431443 has 8 divisors (see below), whose sum is σ = 426145280. Its totient is φ = 414727560.

The previous prime is 420431423. The next prime is 420431503. The reversal of 420431443 is 344134024.

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 420431443 - 2⁹ = 420430931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420431423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126898 + ... + 130168.

It is an arithmetic number, because the mean of its divisors is an integer number (53268160).

Almost surely, 2^420431443 is an apocalyptic number.

420431443 is a deficient number, since it is larger than the sum of its proper divisors (5713837).

420431443 is a wasteful number, since it uses less digits than its factorization.

420431443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 420431443 is about 20504.4249614565. The cubic root of 420431443 is about 749.1435812496.

Adding to 420431443 its reverse (344134024), we get a palindrome (764565467).

The spelling of 420431443 in words is "four hundred twenty million, four hundred thirty-one thousand, four hundred forty-three".