1305229 has 2 divisors, whose sum is σ = 1305230. Its totient is φ = 1305228.

The previous prime is 1305169. The next prime is 1305233. The reversal of 1305229 is 9225031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1261129 + 44100 = 1123^2 + 210^2 .

It is an emirp because it is prime and its reverse (9225031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305229 - 2¹⁵ = 1272461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652614 + 652615.

It is an arithmetic number, because the mean of its divisors is an integer number (652615).

2^1305229 is an apocalyptic number.

It is an amenable number.

1305229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305229 is an equidigital number, since it uses as much as digits as its factorization.

1305229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1305229 is about 1142.4661920600. The cubic root of 1305229 is about 109.2854231474.

The spelling of 1305229 in words is "one million, three hundred five thousand, two hundred twenty-nine".