1405361 has 2 divisors, whose sum is σ = 1405362. Its totient is φ = 1405360.

The previous prime is 1405351. The next prime is 1405363. The reversal of 1405361 is 1635041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 323761 = 1040^2 + 569^2 .

It is an emirp because it is prime and its reverse (1635041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1405361 - 2¹⁸ = 1143217 is a prime.

Together with 1405363, 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 (1405363) 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, 702680 + 702681.

It is an arithmetic number, because the mean of its divisors is an integer number (702681).

2^1405361 is an apocalyptic number.

It is an amenable number.

1405361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405361 is an equidigital number, since it uses as much as digits as its factorization.

1405361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1405361 is about 1185.4792279918. The cubic root of 1405361 is about 112.0115049831.

The spelling of 1405361 in words is "one million, four hundred five thousand, three hundred sixty-one".