1257316 has 6 divisors (see below), whose sum is σ = 2200310. Its totient is φ = 628656.

The previous prime is 1257313. The next prime is 1257317. The reversal of 1257316 is 6137521.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 2916 = 1120^2 + 54^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1257313) 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, 157161 + ... + 157168.

2^1257316 is an apocalyptic number.

It is an amenable number.

1257316 is a deficient number, since it is larger than the sum of its proper divisors (942994).

1257316 is a wasteful number, since it uses less digits than its factorization.

1257316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314333 (or 314331 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1257316 is about 1121.3010300539. The cubic root of 1257316 is about 107.9314837480.

The spelling of 1257316 in words is "one million, two hundred fifty-seven thousand, three hundred sixteen".