1143217 has 2 divisors, whose sum is σ = 1143218. Its totient is φ = 1143216.

The previous prime is 1143193. The next prime is 1143223. The reversal of 1143217 is 7123411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 59536 = 1041^2 + 244^2 .

It is an emirp because it is prime and its reverse (7123411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143217 - 2⁷ = 1143089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143194 and 1143203.

It is not a weakly prime, because it can be changed into another prime (1143227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571608 + 571609.

It is an arithmetic number, because the mean of its divisors is an integer number (571609).

2^1143217 is an apocalyptic number.

It is an amenable number.

1143217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143217 is an equidigital number, since it uses as much as digits as its factorization.

1143217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 19.

The square root of 1143217 is about 1069.2132621699. The cubic root of 1143217 is about 104.5625641242.

Adding to 1143217 its reverse (7123411), we get a palindrome (8266628).

It can be divided in two parts, 11432 and 17, that added together give a square (11449 = 107²).

The spelling of 1143217 in words is "one million, one hundred forty-three thousand, two hundred seventeen".