1273000885 has 16 divisors (see below), whose sum is σ = 1741881456. Its totient is φ = 884763648.

The previous prime is 1273000877. The next prime is 1273000891. The reversal of 1273000885 is 5880003721.

It can be written as a sum of positive squares in 8 ways, for example, as 6922161 + 1266078724 = 2631^2 + 35582^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273000885 - 2³ = 1273000877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1273000885.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 574914 + ... + 577123.

It is an arithmetic number, because the mean of its divisors is an integer number (108867591).

Almost surely, 2^1273000885 is an apocalyptic number.

It is an amenable number.

1273000885 is a deficient number, since it is larger than the sum of its proper divisors (468880571).

1273000885 is a wasteful number, since it uses less digits than its factorization.

1273000885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152072.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1273000885 is about 35679.1379520302. The cubic root of 1273000885 is about 1083.7844159111.

The spelling of 1273000885 in words is "one billion, two hundred seventy-three million, eight hundred eighty-five", and thus it is an aban number.