1296261 has 12 divisors (see below), whose sum is σ = 1898988. Its totient is φ = 851904.

The previous prime is 1296227. The next prime is 1296277. The reversal of 1296261 is 1626921.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 799236 = 705^2 + 894^2 .

It is not a de Polignac number, because 1296261 - 2¹⁴ = 1279877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292261) 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 11 ways as a sum of consecutive naturals, for example, 330 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (158249).

2^1296261 is an apocalyptic number.

It is an amenable number.

1296261 is a deficient number, since it is larger than the sum of its proper divisors (602727).

1296261 is a wasteful number, since it uses less digits than its factorization.

1296261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2049 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1296261 is about 1138.5345844549. The cubic root of 1296261 is about 109.0345540366.

The spelling of 1296261 in words is "one million, two hundred ninety-six thousand, two hundred sixty-one".