1260755279 has 16 divisors (see below), whose sum is σ = 1557696000. Its totient is φ = 996097824.

The previous prime is 1260755263. The next prime is 1260755291. The reversal of 1260755279 is 9725570621.

It is a cyclic number.

It is not a de Polignac number, because 1260755279 - 2⁴ = 1260755263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260755299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123179 + ... + 133020.

It is an arithmetic number, because the mean of its divisors is an integer number (97356000).

Almost surely, 2^1260755279 is an apocalyptic number.

1260755279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1260755279 is a deficient number, since it is larger than the sum of its proper divisors (296940721).

1260755279 is a wasteful number, since it uses less digits than its factorization.

1260755279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256262.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 1260755279 is about 35507.1158924518. The cubic root of 1260755279 is about 1080.2980655927.

The spelling of 1260755279 in words is "one billion, two hundred sixty million, seven hundred fifty-five thousand, two hundred seventy-nine".