1276204085 has 16 divisors (see below), whose sum is σ = 1650087936. Its totient is φ = 941947968.

The previous prime is 1276204079. The next prime is 1276204117. The reversal of 1276204085 is 5804026721.

It is not a de Polignac number, because 1276204085 - 2²⁰ = 1275155509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171002 + ... + 178308.

It is an arithmetic number, because the mean of its divisors is an integer number (103130496).

Almost surely, 2^1276204085 is an apocalyptic number.

It is an amenable number.

1276204085 is a deficient number, since it is larger than the sum of its proper divisors (373883851).

1276204085 is a wasteful number, since it uses less digits than its factorization.

1276204085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1276204085 is about 35723.9987263464. The cubic root of 1276204085 is about 1084.6926819746.

The spelling of 1276204085 in words is "one billion, two hundred seventy-six million, two hundred four thousand, eighty-five".