1121447 has 2 divisors, whose sum is σ = 1121448. Its totient is φ = 1121446.

The previous prime is 1121443. The next prime is 1121453. The reversal of 1121447 is 7441211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121447 - 2² = 1121443 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560723 + 560724.

It is an arithmetic number, because the mean of its divisors is an integer number (560724).

2^1121447 is an apocalyptic number.

1121447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121447 is an equidigital number, since it uses as much as digits as its factorization.

1121447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 20.

The square root of 1121447 is about 1058.9839469983. The cubic root of 1121447 is about 103.8945862367.

Adding to 1121447 its reverse (7441211), we get a palindrome (8562658).

The spelling of 1121447 in words is "one million, one hundred twenty-one thousand, four hundred forty-seven".