1272085385 has 8 divisors (see below), whose sum is σ = 1526817600. Its totient is φ = 1017458224.

The previous prime is 1272085361. The next prime is 1272085391. The reversal of 1272085385 is 5835802721.

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 1272085385 - 2¹⁰ = 1272084361 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 3434 + ... + 50556.

It is an arithmetic number, because the mean of its divisors is an integer number (190852200).

Almost surely, 2^1272085385 is an apocalyptic number.

It is an amenable number.

1272085385 is a deficient number, since it is larger than the sum of its proper divisors (254732215).

1272085385 is an equidigital number, since it uses as much as digits as its factorization.

1272085385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52527.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1272085385 is about 35666.3060184258. The cubic root of 1272085385 is about 1083.5245463401.

The spelling of 1272085385 in words is "one billion, two hundred seventy-two million, eighty-five thousand, three hundred eighty-five".