1280571 has 16 divisors (see below), whose sum is σ = 1814784. Its totient is φ = 801504.

The previous prime is 1280567. The next prime is 1280597. The reversal of 1280571 is 1750821.

It is not a de Polignac number, because 1280571 - 2² = 1280567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280561) 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 15 ways as a sum of consecutive naturals, for example, 4485 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (113424).

2^1280571 is an apocalyptic number.

1280571 is a deficient number, since it is larger than the sum of its proper divisors (534213).

1280571 is a wasteful number, since it uses less digits than its factorization.

1280571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1280571 is about 1131.6231704945. The cubic root of 1280571 is about 108.5928473934.

The spelling of 1280571 in words is "one million, two hundred eighty thousand, five hundred seventy-one".