1261013 has 4 divisors (see below), whose sum is σ = 1358028. Its totient is φ = 1164000.

The previous prime is 1260991. The next prime is 1261033. The reversal of 1261013 is 3101621.

1261013 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3101621 = 307 ⋅10103.

It can be written as a sum of positive squares in 2 ways, for example, as 552049 + 708964 = 743^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 1261013 - 2⁸ = 1260757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261033) 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 3 ways as a sum of consecutive naturals, for example, 48488 + ... + 48513.

It is an arithmetic number, because the mean of its divisors is an integer number (339507).

2^1261013 is an apocalyptic number.

1261013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1261013 is a deficient number, since it is larger than the sum of its proper divisors (97015).

1261013 is an equidigital number, since it uses as much as digits as its factorization.

1261013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97014.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1261013 is about 1122.9483514392. The cubic root of 1261013 is about 108.0371671347.

Adding to 1261013 its reverse (3101621), we get a palindrome (4362634).

The spelling of 1261013 in words is "one million, two hundred sixty-one thousand, thirteen".