1236481 has 2 divisors, whose sum is σ = 1236482. Its totient is φ = 1236480.

The previous prime is 1236479. The next prime is 1236491. The reversal of 1236481 is 1846321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 266256 = 985^2 + 516^2 .

It is an emirp because it is prime and its reverse (1846321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1236481 - 2¹ = 1236479 is a prime.

It is a super-2 number, since 2×1236481² = 3057770526722, which contains 22 as substring.

Together with 1236479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1236491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618240 + 618241.

It is an arithmetic number, because the mean of its divisors is an integer number (618241).

2^1236481 is an apocalyptic number.

It is an amenable number.

1236481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236481 is an equidigital number, since it uses as much as digits as its factorization.

1236481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 1236481 is about 1111.9716723011. The cubic root of 1236481 is about 107.3319819881.

The spelling of 1236481 in words is "one million, two hundred thirty-six thousand, four hundred eighty-one".