1205047 has 2 divisors, whose sum is σ = 1205048. Its totient is φ = 1205046.

The previous prime is 1205027. The next prime is 1205081. The reversal of 1205047 is 7405021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205047 - 2¹⁵ = 1172279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205027) 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, 602523 + 602524.

It is an arithmetic number, because the mean of its divisors is an integer number (602524).

2^1205047 is an apocalyptic number.

1205047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205047 is an equidigital number, since it uses as much as digits as its factorization.

1205047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1205047 is about 1097.7463277096. The cubic root of 1205047 is about 106.4146273726.

The spelling of 1205047 in words is "one million, two hundred five thousand, forty-seven".