1279040275 has 6 divisors (see below), whose sum is σ = 1586009972. Its totient is φ = 1023232200.

The previous prime is 1279040267. The next prime is 1279040303. The reversal of 1279040275 is 5720409721.

It is not a de Polignac number, because 1279040275 - 2³ = 1279040267 is a prime.

It is a Duffinian number.

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, 25580781 + ... + 25580830.

Almost surely, 2^1279040275 is an apocalyptic number.

1279040275 is a deficient number, since it is larger than the sum of its proper divisors (306969697).

1279040275 is an equidigital number, since it uses as much as digits as its factorization.

1279040275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51161621 (or 51161616 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 1279040275 is about 35763.6725602950. The cubic root of 1279040275 is about 1085.4956147832.

Adding to 1279040275 its reverse (5720409721), we get a palindrome (6999449996).

The spelling of 1279040275 in words is "one billion, two hundred seventy-nine million, forty thousand, two hundred seventy-five".