1279375 has 20 divisors (see below), whose sum is σ = 1686960. Its totient is φ = 968000.

The previous prime is 1279361. The next prime is 1279417. The reversal of 1279375 is 5739721.

It is not a de Polignac number, because 1279375 - 2¹³ = 1271183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279375.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 14331 + ... + 14419.

It is an arithmetic number, because the mean of its divisors is an integer number (84348).

2^1279375 is an apocalyptic number.

1279375 is a deficient number, since it is larger than the sum of its proper divisors (407585).

1279375 is an frugal number, since it uses more digits than its factorization.

1279375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 117 counting only the distinct ones).

The product of its digits is 13230, while the sum is 34.

The square root of 1279375 is about 1131.0946025864. The cubic root of 1279375 is about 108.5590297970.

The spelling of 1279375 in words is "one million, two hundred seventy-nine thousand, three hundred seventy-five".