1286471 has 4 divisors (see below), whose sum is σ = 1354200. Its totient is φ = 1218744.

The previous prime is 1286447. The next prime is 1286489. The reversal of 1286471 is 1746821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1286471 - 2¹⁸ = 1024327 is a prime.

It is a super-3 number, since 3×1286471³ = 6387357977145195333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286491) 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, 33836 + ... + 33873.

It is an arithmetic number, because the mean of its divisors is an integer number (338550).

2^1286471 is an apocalyptic number.

1286471 is a deficient number, since it is larger than the sum of its proper divisors (67729).

1286471 is an equidigital number, since it uses as much as digits as its factorization.

1286471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67728.

The product of its digits is 2688, while the sum is 29.

The square root of 1286471 is about 1134.2270495805. The cubic root of 1286471 is about 108.7593659085.

The spelling of 1286471 in words is "one million, two hundred eighty-six thousand, four hundred seventy-one".