1271206855 has 8 divisors (see below), whose sum is σ = 1554230592. Its totient is φ = 997777248.

The previous prime is 1271206831. The next prime is 1271206897. The reversal of 1271206855 is 5586021721.

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 1271206855 - 2¹¹ = 1271204807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398239 + ... + 2398768.

It is an arithmetic number, because the mean of its divisors is an integer number (194278824).

Almost surely, 2^1271206855 is an apocalyptic number.

1271206855 is a deficient number, since it is larger than the sum of its proper divisors (283023737).

1271206855 is an equidigital number, since it uses as much as digits as its factorization.

1271206855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797065.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 1271206855 is about 35653.9879256164. The cubic root of 1271206855 is about 1083.2750536432.

The spelling of 1271206855 in words is "one billion, two hundred seventy-one million, two hundred six thousand, eight hundred fifty-five".