1272881 has 2 divisors, whose sum is σ = 1272882. Its totient is φ = 1272880.

The previous prime is 1272863. The next prime is 1272883. The reversal of 1272881 is 1882721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 312481 = 980^2 + 559^2 .

It is an emirp because it is prime and its reverse (1882721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272881 is a prime.

It is a super-2 number, since 2×1272881² = 3240452080322, which contains 22 as substring.

Together with 1272883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1272883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636440 + 636441.

It is an arithmetic number, because the mean of its divisors is an integer number (636441).

2^1272881 is an apocalyptic number.

It is an amenable number.

1272881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272881 is an equidigital number, since it uses as much as digits as its factorization.

1272881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 29.

The square root of 1272881 is about 1128.2202799099. The cubic root of 1272881 is about 108.3750393004.

The spelling of 1272881 in words is "one million, two hundred seventy-two thousand, eight hundred eighty-one".