1257263 has 8 divisors (see below), whose sum is σ = 1444128. Its totient is φ = 1072224.

The previous prime is 1257253. The next prime is 1257281. The reversal of 1257263 is 3627521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1257263 - 2⁴ = 1257247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (180516).

2^1257263 is an apocalyptic number.

1257263 is a deficient number, since it is larger than the sum of its proper divisors (186865).

1257263 is an equidigital number, since it uses as much as digits as its factorization.

1257263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its digits is 2520, while the sum is 26.

The square root of 1257263 is about 1121.2773965438. The cubic root of 1257263 is about 107.9299671712.

It can be divided in two parts, 12 and 57263, that added together give a palindrome (57275).

The spelling of 1257263 in words is "one million, two hundred fifty-seven thousand, two hundred sixty-three".