1279875 has 16 divisors (see below), whose sum is σ = 2130336. Its totient is φ = 682400.

The previous prime is 1279871. The next prime is 1279877. The reversal of 1279875 is 5789721.

It is not a de Polignac number, because 1279875 - 2² = 1279871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1279871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (133146).

2^1279875 is an apocalyptic number.

1279875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1279875 is a deficient number, since it is larger than the sum of its proper divisors (850461).

1279875 is an equidigital number, since it uses as much as digits as its factorization.

1279875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3421 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The square root of 1279875 is about 1131.3156058324. The cubic root of 1279875 is about 108.5731701508.

The spelling of 1279875 in words is "one million, two hundred seventy-nine thousand, eight hundred seventy-five".