1142589 has 8 divisors (see below), whose sum is σ = 1741120. Its totient is φ = 652896.

The previous prime is 1142573. The next prime is 1142593. The reversal of 1142589 is 9852411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142589 - 2⁴ = 1142573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142509) 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 7 ways as a sum of consecutive naturals, for example, 27184 + ... + 27225.

It is an arithmetic number, because the mean of its divisors is an integer number (217640).

2^1142589 is an apocalyptic number.

It is an amenable number.

1142589 is a deficient number, since it is larger than the sum of its proper divisors (598531).

1142589 is an equidigital number, since it uses as much as digits as its factorization.

1142589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54419.

The product of its digits is 2880, while the sum is 30.

The square root of 1142589 is about 1068.9195479548. The cubic root of 1142589 is about 104.5434142696.

The spelling of 1142589 in words is "one million, one hundred forty-two thousand, five hundred eighty-nine".