1143297 has 6 divisors (see below), whose sum is σ = 1651442. Its totient is φ = 762192.

The previous prime is 1143283. The next prime is 1143299. The reversal of 1143297 is 7923411.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 53361 = 1044^2 + 231^2 .

It is not a de Polignac number, because 1143297 - 2⁴ = 1143281 is a prime.

It is a Duffinian number.

1143297 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143297.

It is not an unprimeable number, because it can be changed into a prime (1143299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63508 + ... + 63525.

2^1143297 is an apocalyptic number.

It is an amenable number.

1143297 is a deficient number, since it is larger than the sum of its proper divisors (508145).

1143297 is a wasteful number, since it uses less digits than its factorization.

1143297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127039 (or 127036 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1143297 is about 1069.2506721999. The cubic root of 1143297 is about 104.5650030925.

The spelling of 1143297 in words is "one million, one hundred forty-three thousand, two hundred ninety-seven".