1312245 has 36 divisors (see below), whose sum is σ = 2510508. Its totient is φ = 633600.

The previous prime is 1312237. The next prime is 1312277. The reversal of 1312245 is 5422131.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 576081 = 858^2 + 759^2 .

It is not a de Polignac number, because 1312245 - 2³ = 1312237 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5325 + ... + 5565.

2^1312245 is an apocalyptic number.

1312245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312245 is a deficient number, since it is larger than the sum of its proper divisors (1198263).

1312245 is a wasteful number, since it uses less digits than its factorization.

1312245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 260 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1312245 is about 1145.5326272088. The cubic root of 1312245 is about 109.4808873879.

Adding to 1312245 its reverse (5422131), we get a palindrome (6734376).

The spelling of 1312245 in words is "one million, three hundred twelve thousand, two hundred forty-five".