1121249 has 2 divisors, whose sum is σ = 1121250. Its totient is φ = 1121248.

The previous prime is 1121231. The next prime is 1121257. The reversal of 1121249 is 9421211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 429025 = 832^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121249 - 2⁸ = 1120993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121249.

It is not a weakly prime, because it can be changed into another prime (1127249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560624 + 560625.

It is an arithmetic number, because the mean of its divisors is an integer number (560625).

2^1121249 is an apocalyptic number.

It is an amenable number.

1121249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121249 is an equidigital number, since it uses as much as digits as its factorization.

1121249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1121249 is about 1058.8904570351. The cubic root of 1121249 is about 103.8884714169. Note that the first 3 decimals are identical.

The spelling of 1121249 in words is "one million, one hundred twenty-one thousand, two hundred forty-nine".