1285159 has 2 divisors, whose sum is σ = 1285160. Its totient is φ = 1285158.

The previous prime is 1285147. The next prime is 1285169. The reversal of 1285159 is 9515821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285159 - 2¹¹ = 1283111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1285159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285129) 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, 642579 + 642580.

It is an arithmetic number, because the mean of its divisors is an integer number (642580).

2^1285159 is an apocalyptic number.

1285159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285159 is an equidigital number, since it uses as much as digits as its factorization.

1285159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 31.

The square root of 1285159 is about 1133.6485345997. The cubic root of 1285159 is about 108.7223807961.

It can be divided in two parts, 1285 and 159, that added together give a square (1444 = 38²).

The spelling of 1285159 in words is "one million, two hundred eighty-five thousand, one hundred fifty-nine".