420303043 has 2 divisors, whose sum is σ = 420303044. Its totient is φ = 420303042.

The previous prime is 420303029. The next prime is 420303049. The reversal of 420303043 is 340303024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420303043 - 2²¹ = 418205891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420303043.

It is not a weakly prime, because it can be changed into another prime (420303049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210151521 + 210151522.

It is an arithmetic number, because the mean of its divisors is an integer number (210151522).

Almost surely, 2^420303043 is an apocalyptic number.

420303043 is a deficient number, since it is larger than the sum of its proper divisors (1).

420303043 is an equidigital number, since it uses as much as digits as its factorization.

420303043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 420303043 is about 20501.2936908869. The cubic root of 420303043 is about 749.0673105272.

Subtracting from 420303043 its sum of digits (19), we obtain a palindrome (420303024).

Adding to 420303043 its reverse (340303024), we get a palindrome (760606067).

The spelling of 420303043 in words is "four hundred twenty million, three hundred three thousand, forty-three".