1257229 has 2 divisors, whose sum is σ = 1257230. Its totient is φ = 1257228.

The previous prime is 1257209. The next prime is 1257233. The reversal of 1257229 is 9227521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1054729 + 202500 = 1027^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1257229 - 2¹¹ = 1255181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1257197 and 1257206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1257209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628614 + 628615.

It is an arithmetic number, because the mean of its divisors is an integer number (628615).

2^1257229 is an apocalyptic number.

It is an amenable number.

1257229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257229 is an equidigital number, since it uses as much as digits as its factorization.

1257229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 1257229 is about 1121.2622351618. The cubic root of 1257229 is about 107.9289942504.

The spelling of 1257229 in words is "one million, two hundred fifty-seven thousand, two hundred twenty-nine".