420435229 has 2 divisors, whose sum is σ = 420435230. Its totient is φ = 420435228.

The previous prime is 420435217. The next prime is 420435247. The reversal of 420435229 is 922534024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238239225 + 182196004 = 15435^2 + 13498^2 .

It is a cyclic number.

It is not a de Polignac number, because 420435229 - 2¹³ = 420427037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420435229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420435269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210217614 + 210217615.

It is an arithmetic number, because the mean of its divisors is an integer number (210217615).

Almost surely, 2^420435229 is an apocalyptic number.

It is an amenable number.

420435229 is a deficient number, since it is larger than the sum of its proper divisors (1).

420435229 is an equidigital number, since it uses as much as digits as its factorization.

420435229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 420435229 is about 20504.5172827843. The cubic root of 420435229 is about 749.1458299310.

The spelling of 420435229 in words is "four hundred twenty million, four hundred thirty-five thousand, two hundred twenty-nine".