1281286 has 8 divisors (see below), whose sum is σ = 1941264. Its totient is φ = 634200.

The previous prime is 1281283. The next prime is 1281317. The reversal of 1281286 is 6821821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (242658).

2^1281286 is an apocalyptic number.

1281286 is a deficient number, since it is larger than the sum of its proper divisors (659978).

1281286 is a wasteful number, since it uses less digits than its factorization.

1281286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446.

The product of its digits is 1536, while the sum is 28.

The square root of 1281286 is about 1131.9390442952. The cubic root of 1281286 is about 108.6130543791.

The spelling of 1281286 in words is "one million, two hundred eighty-one thousand, two hundred eighty-six".