1260143279 has 2 divisors, whose sum is σ = 1260143280. Its totient is φ = 1260143278.

The previous prime is 1260143237. The next prime is 1260143329. The reversal of 1260143279 is 9723410621.

It is a weak prime.

It is an emirp because it is prime and its reverse (9723410621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260143279 is a prime.

It is a super-2 number, since 2×1260143279² = 3175922167217743682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260143219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630071639 + 630071640.

It is an arithmetic number, because the mean of its divisors is an integer number (630071640).

Almost surely, 2^1260143279 is an apocalyptic number.

1260143279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260143279 is an equidigital number, since it uses as much as digits as its factorization.

1260143279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1260143279 is about 35498.4968555008. The cubic root of 1260143279 is about 1080.1232366802.

The spelling of 1260143279 in words is "one billion, two hundred sixty million, one hundred forty-three thousand, two hundred seventy-nine".