1280002 has 12 divisors (see below), whose sum is σ = 1991106. Its totient is φ = 617120.

The previous prime is 1279997. The next prime is 1280023. The reversal of 1280002 is 2000821.

It can be written as a sum of positive squares in 3 ways, for example, as 703921 + 576081 = 839^2 + 759^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1302 + ... + 2062.

2^1280002 is an apocalyptic number.

1280002 is a deficient number, since it is larger than the sum of its proper divisors (711104).

1280002 is an equidigital number, since it uses as much as digits as its factorization.

1280002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1280002 is about 1131.3717337816. The cubic root of 1280002 is about 108.5767612141.

Adding to 1280002 its reverse (2000821), we get a palindrome (3280823).

The spelling of 1280002 in words is "one million, two hundred eighty thousand, two".