1261036 has 24 divisors (see below), whose sum is σ = 2610720. Its totient is φ = 521472.

The previous prime is 1261033. The next prime is 1261069. The reversal of 1261036 is 6301621.

1261036 = T₃₃₆ + T₃₃₇ + ... + T₃₅₆.

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 7 ways as a sum of consecutive naturals, for example, 36 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (108780).

2^1261036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1261036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305360).

1261036 is an abundant number, since it is smaller than the sum of its proper divisors (1349684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261036 is a wasteful number, since it uses less digits than its factorization.

1261036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1261036 is about 1122.9585922909. The cubic root of 1261036 is about 108.0378239716.

Adding to 1261036 its reverse (6301621), we get a palindrome (7562657).

The spelling of 1261036 in words is "one million, two hundred sixty-one thousand, thirty-six".