420300823 has 2 divisors, whose sum is σ = 420300824. Its totient is φ = 420300822.

The previous prime is 420300763. The next prime is 420300841. The reversal of 420300823 is 328003024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420300823 - 2¹⁷ = 420169751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420300794 and 420300803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420300523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210150411 + 210150412.

It is an arithmetic number, because the mean of its divisors is an integer number (210150412).

Almost surely, 2^420300823 is an apocalyptic number.

420300823 is a deficient number, since it is larger than the sum of its proper divisors (1).

420300823 is an equidigital number, since it uses as much as digits as its factorization.

420300823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420300823 is about 20501.2395478908. The cubic root of 420300823 is about 749.0659916912.

Adding to 420300823 its reverse (328003024), we get a palindrome (748303847).

The spelling of 420300823 in words is "four hundred twenty million, three hundred thousand, eight hundred twenty-three".