1285049 has 2 divisors, whose sum is σ = 1285050. Its totient is φ = 1285048.

The previous prime is 1285021. The next prime is 1285051. The reversal of 1285049 is 9405821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822649 + 462400 = 907^2 + 680^2 .

It is an emirp because it is prime and its reverse (9405821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285049 - 2⁸ = 1284793 is a prime.

Together with 1285051, 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 (1285069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642524 + 642525.

It is an arithmetic number, because the mean of its divisors is an integer number (642525).

2^1285049 is an apocalyptic number.

It is an amenable number.

1285049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285049 is an equidigital number, since it uses as much as digits as its factorization.

1285049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1285049 is about 1133.6000176429. The cubic root of 1285049 is about 108.7192787667.

The spelling of 1285049 in words is "one million, two hundred eighty-five thousand, forty-nine".