1442885 has 4 divisors (see below), whose sum is σ = 1731468. Its totient is φ = 1154304.

The previous prime is 1442873. The next prime is 1442887. The reversal of 1442885 is 5882441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5882441 = 113 ⋅52057.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 948676 = 703^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442885 - 2⁴ = 1442869 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 (1442887) 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 3 ways as a sum of consecutive naturals, for example, 144284 + ... + 144293.

It is an arithmetic number, because the mean of its divisors is an integer number (432867).

2^1442885 is an apocalyptic number.

It is an amenable number.

1442885 is a deficient number, since it is larger than the sum of its proper divisors (288583).

1442885 is an equidigital number, since it uses as much as digits as its factorization.

1442885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288582.

The product of its digits is 10240, while the sum is 32.

The square root of 1442885 is about 1201.2014818506. The cubic root of 1442885 is about 112.9996867405. Note that the first 3 decimals are identical.

The spelling of 1442885 in words is "one million, four hundred forty-two thousand, eight hundred eighty-five".