420773321 has 2 divisors, whose sum is σ = 420773322. Its totient is φ = 420773320.

The previous prime is 420773291. The next prime is 420773351. The reversal of 420773321 is 123377024.

It is a balanced prime because it is at equal distance from previous prime (420773291) and next prime (420773351).

It can be written as a sum of positive squares in only one way, i.e., 257955721 + 162817600 = 16061^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 420773321 - 2¹⁴ = 420756937 is a prime.

It is not a weakly prime, because it can be changed into another prime (420773351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210386660 + 210386661.

It is an arithmetic number, because the mean of its divisors is an integer number (210386661).

Almost surely, 2^420773321 is an apocalyptic number.

It is an amenable number.

420773321 is a deficient number, since it is larger than the sum of its proper divisors (1).

420773321 is an equidigital number, since it uses as much as digits as its factorization.

420773321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 420773321 is about 20512.7599556959. The cubic root of 420773321 is about 749.3465840807.

The spelling of 420773321 in words is "four hundred twenty million, seven hundred seventy-three thousand, three hundred twenty-one".