1277249 has 2 divisors, whose sum is σ = 1277250. Its totient is φ = 1277248.

The previous prime is 1277233. The next prime is 1277257. The reversal of 1277249 is 9427721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 160000 = 1057^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1277249 - 2⁴ = 1277233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1277209) 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, 638624 + 638625.

It is an arithmetic number, because the mean of its divisors is an integer number (638625).

2^1277249 is an apocalyptic number.

It is an amenable number.

1277249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277249 is an equidigital number, since it uses as much as digits as its factorization.

1277249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 1277249 is about 1130.1544142284. The cubic root of 1277249 is about 108.4988638417.

It can be divided in two parts, 12772 and 49, that added together give a palindrome (12821).

The spelling of 1277249 in words is "one million, two hundred seventy-seven thousand, two hundred forty-nine".