1310245 has 4 divisors (see below), whose sum is σ = 1572300. Its totient is φ = 1048192.

The previous prime is 1310233. The next prime is 1310251. The reversal of 1310245 is 5420131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5420131 = 137 ⋅39563.

It can be written as a sum of positive squares in 2 ways, for example, as 173889 + 1136356 = 417^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310245 - 2⁷ = 1310117 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 131020 + ... + 131029.

It is an arithmetic number, because the mean of its divisors is an integer number (393075).

2^1310245 is an apocalyptic number.

It is an amenable number.

1310245 is a deficient number, since it is larger than the sum of its proper divisors (262055).

1310245 is an equidigital number, since it uses as much as digits as its factorization.

1310245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262054.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1310245 is about 1144.6593379692. The cubic root of 1310245 is about 109.4252389611.

Adding to 1310245 its reverse (5420131), we get a palindrome (6730376).

The spelling of 1310245 in words is "one million, three hundred ten thousand, two hundred forty-five".