1142259 has 4 divisors (see below), whose sum is σ = 1523016. Its totient is φ = 761504.

The previous prime is 1142243. The next prime is 1142263. The reversal of 1142259 is 9522411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142259 - 2⁴ = 1142243 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1142269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190374 + ... + 190379.

It is an arithmetic number, because the mean of its divisors is an integer number (380754).

2^1142259 is an apocalyptic number.

1142259 is a deficient number, since it is larger than the sum of its proper divisors (380757).

1142259 is an equidigital number, since it uses as much as digits as its factorization.

1142259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380756.

The product of its digits is 720, while the sum is 24.

The square root of 1142259 is about 1068.7651753309. The cubic root of 1142259 is about 104.5333486355.

The spelling of 1142259 in words is "one million, one hundred forty-two thousand, two hundred fifty-nine".