1129217 has 2 divisors, whose sum is σ = 1129218. Its totient is φ = 1129216.

The previous prime is 1129213. The next prime is 1129229. The reversal of 1129217 is 7129211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678976 + 450241 = 824^2 + 671^2 .

It is an emirp because it is prime and its reverse (7129211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129217 - 2² = 1129213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1129192 and 1129201.

It is not a weakly prime, because it can be changed into another prime (1129211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564608 + 564609.

It is an arithmetic number, because the mean of its divisors is an integer number (564609).

2^1129217 is an apocalyptic number.

It is an amenable number.

1129217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129217 is an equidigital number, since it uses as much as digits as its factorization.

1129217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 23.

The square root of 1129217 is about 1062.6462252321. The cubic root of 1129217 is about 104.1339804290.

The spelling of 1129217 in words is "one million, one hundred twenty-nine thousand, two hundred seventeen".