1279058261 has 8 divisors (see below), whose sum is σ = 1380282624. Its totient is φ = 1178238960.

The previous prime is 1279058219. The next prime is 1279058293. The reversal of 1279058261 is 1628509721.

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

It is a cyclic number.

It is not a de Polignac number, because 1279058261 - 2⁶ = 1279058197 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 (1279058761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94685 + ... + 107346.

It is an arithmetic number, because the mean of its divisors is an integer number (172535328).

Almost surely, 2^1279058261 is an apocalyptic number.

It is an amenable number.

1279058261 is a deficient number, since it is larger than the sum of its proper divisors (101224363).

1279058261 is a wasteful number, since it uses less digits than its factorization.

1279058261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202531.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 1279058261 is about 35763.9240156893. The cubic root of 1279058261 is about 1085.5007028775.

The spelling of 1279058261 in words is "one billion, two hundred seventy-nine million, fifty-eight thousand, two hundred sixty-one".