1240361 has 2 divisors, whose sum is σ = 1240362. Its totient is φ = 1240360.

The previous prime is 1240333. The next prime is 1240363. The reversal of 1240361 is 1630421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931225 + 309136 = 965^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240361 - 2¹⁴ = 1223977 is a prime.

Together with 1240363, 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 (1240363) 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 as a sum of consecutive naturals, namely, 620180 + 620181.

It is an arithmetic number, because the mean of its divisors is an integer number (620181).

2^1240361 is an apocalyptic number.

It is an amenable number.

1240361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240361 is an equidigital number, since it uses as much as digits as its factorization.

1240361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1240361 is about 1113.7149545552. The cubic root of 1240361 is about 107.4441317777. Note that the first 3 decimals are identical.

Adding to 1240361 its reverse (1630421), we get a palindrome (2870782).

The spelling of 1240361 in words is "one million, two hundred forty thousand, three hundred sixty-one".