1279226271 has 8 divisors (see below), whose sum is σ = 1751733424. Its totient is φ = 829768320.

The previous prime is 1279226233. The next prime is 1279226293. The reversal of 1279226271 is 1726229721.

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

It is not a de Polignac number, because 1279226271 - 2¹⁴ = 1279209887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279226171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5762170 + ... + 5762391.

It is an arithmetic number, because the mean of its divisors is an integer number (218966678).

Almost surely, 2^1279226271 is an apocalyptic number.

1279226271 is a deficient number, since it is larger than the sum of its proper divisors (472507153).

1279226271 is a wasteful number, since it uses less digits than its factorization.

1279226271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524601.

The product of its digits is 42336, while the sum is 39.

The square root of 1279226271 is about 35766.2728139235. The cubic root of 1279226271 is about 1085.5482292475.

The spelling of 1279226271 in words is "one billion, two hundred seventy-nine million, two hundred twenty-six thousand, two hundred seventy-one".