1256746 has 4 divisors (see below), whose sum is σ = 1885122. Its totient is φ = 628372.

The previous prime is 1256737. The next prime is 1256747. The reversal of 1256746 is 6476521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6476521 = 499 ⋅12979.

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 35721 = 1105^2 + 189^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1256747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314185 + ... + 314188.

2^1256746 is an apocalyptic number.

1256746 is a deficient number, since it is larger than the sum of its proper divisors (628376).

1256746 is an equidigital number, since it uses as much as digits as its factorization.

1256746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628375.

The product of its digits is 10080, while the sum is 31.

The square root of 1256746 is about 1121.0468322064. The cubic root of 1256746 is about 107.9151711571.

It can be divided in two parts, 1256 and 746, that added together give a palindrome (2002).

The spelling of 1256746 in words is "one million, two hundred fifty-six thousand, seven hundred forty-six".