1260813 has 4 divisors (see below), whose sum is σ = 1681088. Its totient is φ = 840540.

The previous prime is 1260799. The next prime is 1260827. The reversal of 1260813 is 3180621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3180621 = 3 ⋅1060207.

It is an interprime number because it is at equal distance from previous prime (1260799) and next prime (1260827).

It is not a de Polignac number, because 1260813 - 2⁴ = 1260797 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260893) 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 in 3 ways as a sum of consecutive naturals, for example, 210133 + ... + 210138.

It is an arithmetic number, because the mean of its divisors is an integer number (420272).

2^1260813 is an apocalyptic number.

It is an amenable number.

1260813 is a deficient number, since it is larger than the sum of its proper divisors (420275).

1260813 is an equidigital number, since it uses as much as digits as its factorization.

1260813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420274.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1260813 is about 1122.8592966173. The cubic root of 1260813 is about 108.0314551724.

It can be divided in two parts, 12608 and 13, that added together give a palindrome (12621).

The spelling of 1260813 in words is "one million, two hundred sixty thousand, eight hundred thirteen".