1120289 has 2 divisors, whose sum is σ = 1120290. Its totient is φ = 1120288.

The previous prime is 1120277. The next prime is 1120291. The reversal of 1120289 is 9820211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 380689 = 860^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120289 - 2²⁰ = 71713 is a prime.

Together with 1120291, 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 (1120219) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560144 + 560145.

It is an arithmetic number, because the mean of its divisors is an integer number (560145).

2^1120289 is an apocalyptic number.

It is an amenable number.

1120289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120289 is an equidigital number, since it uses as much as digits as its factorization.

1120289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1120289 is about 1058.4370552848. The cubic root of 1120289 is about 103.8588135950.

The spelling of 1120289 in words is "one million, one hundred twenty thousand, two hundred eighty-nine".