1229257 has 2 divisors, whose sum is σ = 1229258. Its totient is φ = 1229256.

The previous prime is 1229237. The next prime is 1229269. The reversal of 1229257 is 7529221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657721 + 571536 = 811^2 + 756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229257 is a prime.

It is a super-2 number, since 2×1229257² = 3022145544098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1229227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614628 + 614629.

It is an arithmetic number, because the mean of its divisors is an integer number (614629).

2^1229257 is an apocalyptic number.

It is an amenable number.

1229257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229257 is an equidigital number, since it uses as much as digits as its factorization.

1229257 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 1229257 is about 1108.7186297704. The cubic root of 1229257 is about 107.1225486164.

The spelling of 1229257 in words is "one million, two hundred twenty-nine thousand, two hundred fifty-seven".