1251266 has 12 divisors (see below), whose sum is σ = 1933218. Its totient is φ = 607392.

The previous prime is 1251259. The next prime is 1251287. The reversal of 1251266 is 6621521.

It can be written as a sum of positive squares in 3 ways, for example, as 1164241 + 87025 = 1079^2 + 295^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2510 + ... + 2966.

2^1251266 is an apocalyptic number.

1251266 is a deficient number, since it is larger than the sum of its proper divisors (681952).

1251266 is an equidigital number, since it uses as much as digits as its factorization.

1251266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 496 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1251266 is about 1118.6000178795. The cubic root of 1251266 is about 107.7580890886.

Adding to 1251266 its reverse (6621521), we get a palindrome (7872787).

The spelling of 1251266 in words is "one million, two hundred fifty-one thousand, two hundred sixty-six".