420364723 has 2 divisors, whose sum is σ = 420364724. Its totient is φ = 420364722.

The previous prime is 420364709. The next prime is 420364751. The reversal of 420364723 is 327463024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420364723 - 2⁹ = 420364211 is a prime.

It is not a weakly prime, because it can be changed into another prime (420364523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210182361 + 210182362.

It is an arithmetic number, because the mean of its divisors is an integer number (210182362).

Almost surely, 2^420364723 is an apocalyptic number.

420364723 is a deficient number, since it is larger than the sum of its proper divisors (1).

420364723 is an equidigital number, since it uses as much as digits as its factorization.

420364723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 420364723 is about 20502.7979310142. The cubic root of 420364723 is about 749.1039509248.

The spelling of 420364723 in words is "four hundred twenty million, three hundred sixty-four thousand, seven hundred twenty-three".