1261286 has 16 divisors (see below), whose sum is σ = 2058000. Its totient is φ = 576288.

The previous prime is 1261279. The next prime is 1261289. The reversal of 1261286 is 6821621.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261289) 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, 3440 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (128625).

2^1261286 is an apocalyptic number.

1261286 is a deficient number, since it is larger than the sum of its proper divisors (796714).

1261286 is a wasteful number, since it uses less digits than its factorization.

1261286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 1152, while the sum is 26.

The square root of 1261286 is about 1123.0698998727. The cubic root of 1261286 is about 108.0449629883.

The spelling of 1261286 in words is "one million, two hundred sixty-one thousand, two hundred eighty-six".