1205287 has 2 divisors, whose sum is σ = 1205288. Its totient is φ = 1205286.

The previous prime is 1205257. The next prime is 1205293. The reversal of 1205287 is 7825021.

It is a strong prime.

It is an emirp because it is prime and its reverse (7825021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1205287 - 2⁷ = 1205159 is a prime.

1205287 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602643 + 602644.

It is an arithmetic number, because the mean of its divisors is an integer number (602644).

2^1205287 is an apocalyptic number.

1205287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205287 is an equidigital number, since it uses as much as digits as its factorization.

1205287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1205287 is about 1097.8556371400. The cubic root of 1205287 is about 106.4216914996.

The spelling of 1205287 in words is "one million, two hundred five thousand, two hundred eighty-seven".