1442811 has 4 divisors (see below), whose sum is σ = 1923752. Its totient is φ = 961872.

The previous prime is 1442797. The next prime is 1442827. The reversal of 1442811 is 1182441.

It is a happy number.

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

It is not a de Polignac number, because 1442811 - 2⁹ = 1442299 is a prime.

It is a D-number.

It is a Duffinian number.

1442811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1442411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240466 + ... + 240471.

It is an arithmetic number, because the mean of its divisors is an integer number (480938).

2^1442811 is an apocalyptic number.

1442811 is a deficient number, since it is larger than the sum of its proper divisors (480941).

1442811 is an equidigital number, since it uses as much as digits as its factorization.

1442811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480940.

The product of its digits is 256, while the sum is 21.

The square root of 1442811 is about 1201.1706789628. The cubic root of 1442811 is about 112.9977549349.

The spelling of 1442811 in words is "one million, four hundred forty-two thousand, eight hundred eleven".