1442036905 has 4 divisors (see below), whose sum is σ = 1730444292. Its totient is φ = 1153629520.

The previous prime is 1442036891. The next prime is 1442036923. The reversal of 1442036905 is 5096302441.

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: 5096302441 = 23 ⋅221578367.

It can be written as a sum of positive squares in 2 ways, for example, as 572022889 + 870014016 = 23917^2 + 29496^2 .

It is not a de Polignac number, because 1442036905 - 2⁵ = 1442036873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144203686 + ... + 144203695.

It is an arithmetic number, because the mean of its divisors is an integer number (432611073).

Almost surely, 2^1442036905 is an apocalyptic number.

It is an amenable number.

1442036905 is a deficient number, since it is larger than the sum of its proper divisors (288407387).

1442036905 is an equidigital number, since it uses as much as digits as its factorization.

1442036905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288407386.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1442036905 is about 37974.1610177236. The cubic root of 1442036905 is about 1129.7754285237.

The spelling of 1442036905 in words is "one billion, four hundred forty-two million, thirty-six thousand, nine hundred five".