1272517882 has 4 divisors (see below), whose sum is σ = 1908776826. Its totient is φ = 636258940.

The previous prime is 1272517843. The next prime is 1272517919. The reversal of 1272517882 is 2887152721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1270851201 + 1666681 = 35649^2 + 1291^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318129469 + ... + 318129472.

Almost surely, 2^1272517882 is an apocalyptic number.

1272517882 is a deficient number, since it is larger than the sum of its proper divisors (636258944).

1272517882 is an equidigital number, since it uses as much as digits as its factorization.

1272517882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636258943.

The product of its digits is 125440, while the sum is 43.

The square root of 1272517882 is about 35672.3686065279. The cubic root of 1272517882 is about 1083.6473284590.

The spelling of 1272517882 in words is "one billion, two hundred seventy-two million, five hundred seventeen thousand, eight hundred eighty-two".