1182281 has 2 divisors, whose sum is σ = 1182282. Its totient is φ = 1182280.

The previous prime is 1182277. The next prime is 1182283. The reversal of 1182281 is 1822811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1175056 + 7225 = 1084^2 + 85^2 .

It is an emirp because it is prime and its reverse (1822811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1182281 - 2² = 1182277 is a prime.

It is a super-2 number, since 2×1182281² = 2795576725922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1182283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1182283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591140 + 591141.

It is an arithmetic number, because the mean of its divisors is an integer number (591141).

2^1182281 is an apocalyptic number.

It is an amenable number.

1182281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1182281 is an equidigital number, since it uses as much as digits as its factorization.

1182281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 23.

The square root of 1182281 is about 1087.3274575766. The cubic root of 1182281 is about 105.7402265986.

The spelling of 1182281 in words is "one million, one hundred eighty-two thousand, two hundred eighty-one".