1143239 has 2 divisors, whose sum is σ = 1143240. Its totient is φ = 1143238.

The previous prime is 1143227. The next prime is 1143257. The reversal of 1143239 is 9323411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143239 - 2⁴ = 1143223 is a prime.

It is a super-2 number, since 2×1143239² = 2613990822242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571619 + 571620.

It is an arithmetic number, because the mean of its divisors is an integer number (571620).

2^1143239 is an apocalyptic number.

1143239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143239 is an equidigital number, since it uses as much as digits as its factorization.

1143239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 1143239 is about 1069.2235500586. The cubic root of 1143239 is about 104.5632348518.

The spelling of 1143239 in words is "one million, one hundred forty-three thousand, two hundred thirty-nine".