1279265 has 8 divisors (see below), whose sum is σ = 1653288. Its totient is φ = 944640.

The previous prime is 1279253. The next prime is 1279303. The reversal of 1279265 is 5629721.

It can be written as a sum of positive squares in 4 ways, for example, as 247009 + 1032256 = 497^2 + 1016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1279265 - 2⁴ = 1279249 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9776 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (206661).

2^1279265 is an apocalyptic number.

It is an amenable number.

1279265 is a deficient number, since it is larger than the sum of its proper divisors (374023).

1279265 is a wasteful number, since it uses less digits than its factorization.

1279265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19699.

The product of its digits is 7560, while the sum is 32.

The square root of 1279265 is about 1131.0459760770. The cubic root of 1279265 is about 108.5559184248. Note that the first 3 decimals are identical.

The spelling of 1279265 in words is "one million, two hundred seventy-nine thousand, two hundred sixty-five".