1276216071 has 32 divisors (see below), whose sum is σ = 1856348928. Its totient is φ = 775207680.

The previous prime is 1276216057. The next prime is 1276216169. The reversal of 1276216071 is 1706126721.

It is not a de Polignac number, because 1276216071 - 2⁷ = 1276215943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276216001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2173840 + ... + 2174426.

It is an arithmetic number, because the mean of its divisors is an integer number (58010904).

Almost surely, 2^1276216071 is an apocalyptic number.

1276216071 is a deficient number, since it is larger than the sum of its proper divisors (580132857).

1276216071 is a wasteful number, since it uses less digits than its factorization.

1276216071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 1276216071 is about 35724.1664843282. The cubic root of 1276216071 is about 1084.6960777444.

The spelling of 1276216071 in words is "one billion, two hundred seventy-six million, two hundred sixteen thousand, seventy-one".