1280259 has 8 divisors (see below), whose sum is σ = 1896720. Its totient is φ = 853488.

The previous prime is 1280231. The next prime is 1280267. The reversal of 1280259 is 9520821.

It is not a de Polignac number, because 1280259 - 2⁷ = 1280131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 47417 = 1280259 / (1 + 2 + 8 + 0 + 2 + 5 + 9).

It is not an unprimeable number, because it can be changed into a prime (1280159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23682 + ... + 23735.

It is an arithmetic number, because the mean of its divisors is an integer number (237090).

2^1280259 is an apocalyptic number.

1280259 is a deficient number, since it is larger than the sum of its proper divisors (616461).

1280259 is an equidigital number, since it uses as much as digits as its factorization.

1280259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47426 (or 47420 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1280259 is about 1131.4853070191. The cubic root of 1280259 is about 108.5840274424.

The spelling of 1280259 in words is "one million, two hundred eighty thousand, two hundred fifty-nine".