420612229 has 2 divisors, whose sum is σ = 420612230. Its totient is φ = 420612228.

The previous prime is 420612223. The next prime is 420612281. The reversal of 420612229 is 922216024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376748100 + 43864129 = 19410^2 + 6623^2 .

It is a cyclic number.

It is not a de Polignac number, because 420612229 - 2¹⁵ = 420579461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420612197 and 420612206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420612223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210306114 + 210306115.

It is an arithmetic number, because the mean of its divisors is an integer number (210306115).

Almost surely, 2^420612229 is an apocalyptic number.

It is an amenable number.

420612229 is a deficient number, since it is larger than the sum of its proper divisors (1).

420612229 is an equidigital number, since it uses as much as digits as its factorization.

420612229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 420612229 is about 20508.8329507069. The cubic root of 420612229 is about 749.2509433939.

The spelling of 420612229 in words is "four hundred twenty million, six hundred twelve thousand, two hundred twenty-nine".