420301243 has 4 divisors (see below), whose sum is σ = 424229400. Its totient is φ = 416373088.

The previous prime is 420301207. The next prime is 420301247. The reversal of 420301243 is 342103024.

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 420301243 - 2⁹ = 420300731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420301243.

It is not an unprimeable number, because it can be changed into a prime (420301247) 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, 1963918 + ... + 1964131.

It is an arithmetic number, because the mean of its divisors is an integer number (106057350).

Almost surely, 2^420301243 is an apocalyptic number.

420301243 is a deficient number, since it is larger than the sum of its proper divisors (3928157).

420301243 is a wasteful number, since it uses less digits than its factorization.

420301243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928156.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 420301243 is about 20501.2497911713. The cubic root of 420301243 is about 749.0662412011.

Adding to 420301243 its reverse (342103024), we get a palindrome (762404267).

The spelling of 420301243 in words is "four hundred twenty million, three hundred one thousand, two hundred forty-three".