1286371 has 2 divisors, whose sum is σ = 1286372. Its totient is φ = 1286370.

The previous prime is 1286359. The next prime is 1286381. The reversal of 1286371 is 1736821.

It is a strong prime.

It is an emirp because it is prime and its reverse (1736821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1286371 - 2⁹ = 1285859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1286381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643185 + 643186.

It is an arithmetic number, because the mean of its divisors is an integer number (643186).

2^1286371 is an apocalyptic number.

1286371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286371 is an equidigital number, since it uses as much as digits as its factorization.

1286371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 1286371 is about 1134.1829658393. The cubic root of 1286371 is about 108.7565478067.

The spelling of 1286371 in words is "one million, two hundred eighty-six thousand, three hundred seventy-one".