1442823 has 4 divisors (see below), whose sum is σ = 1923768. Its totient is φ = 961880.

The previous prime is 1442797. The next prime is 1442827. The reversal of 1442823 is 3282441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3282441 = 3 ⋅1094147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442823 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1442793 and 1442802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442827) 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, 240468 + ... + 240473.

It is an arithmetic number, because the mean of its divisors is an integer number (480942).

2^1442823 is an apocalyptic number.

1442823 is a deficient number, since it is larger than the sum of its proper divisors (480945).

1442823 is an equidigital number, since it uses as much as digits as its factorization.

1442823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480944.

The product of its digits is 1536, while the sum is 24.

The square root of 1442823 is about 1201.1756740794. The cubic root of 1442823 is about 112.9980682052.

The spelling of 1442823 in words is "one million, four hundred forty-two thousand, eight hundred twenty-three".