1280079 has 6 divisors (see below), whose sum is σ = 1849016. Its totient is φ = 853380.

The previous prime is 1280023. The next prime is 1280101. The reversal of 1280079 is 9700821.

It is not a de Polignac number, because 1280079 - 2⁸ = 1279823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71107 + ... + 71124.

2^1280079 is an apocalyptic number.

1280079 is a deficient number, since it is larger than the sum of its proper divisors (568937).

1280079 is a wasteful number, since it uses less digits than its factorization.

1280079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142237 (or 142234 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1280079 is about 1131.4057627571. The cubic root of 1280079 is about 108.5789383573.

The spelling of 1280079 in words is "one million, two hundred eighty thousand, seventy-nine".