1442785 has 8 divisors (see below), whose sum is σ = 1749096. Its totient is φ = 1142400.

The previous prime is 1442783. The next prime is 1442797. The reversal of 1442785 is 5872441.

It can be written as a sum of positive squares in 4 ways, for example, as 603729 + 839056 = 777^2 + 916^2 .

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

It is not a de Polignac number, because 1442785 - 2¹ = 1442783 is a prime.

It is a Duffinian number.

1442785 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 1933.

It is an arithmetic number, because the mean of its divisors is an integer number (218637).

2^1442785 is an apocalyptic number.

It is an amenable number.

1442785 is a deficient number, since it is larger than the sum of its proper divisors (306311).

1442785 is a wasteful number, since it uses less digits than its factorization.

1442785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963.

The product of its digits is 8960, while the sum is 31.

The square root of 1442785 is about 1201.1598561391. The cubic root of 1442785 is about 112.9970761767.

The spelling of 1442785 in words is "one million, four hundred forty-two thousand, seven hundred eighty-five".