1126289 has 4 divisors (see below), whose sum is σ = 1129524. Its totient is φ = 1123056.

The previous prime is 1126283. The next prime is 1126313. The reversal of 1126289 is 9826211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9826211 = 19 ⋅517169.

It can be written as a sum of positive squares in 2 ways, for example, as 330625 + 795664 = 575^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126289 - 2⁸ = 1126033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (282381).

2^1126289 is an apocalyptic number.

It is an amenable number.

1126289 is a deficient number, since it is larger than the sum of its proper divisors (3235).

1126289 is an equidigital number, since it uses as much as digits as its factorization.

1126289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its digits is 1728, while the sum is 29.

The square root of 1126289 is about 1061.2676382515. The cubic root of 1126289 is about 104.0438978884.

The spelling of 1126289 in words is "one million, one hundred twenty-six thousand, two hundred eighty-nine".