1442403243409 has 4 divisors (see below), whose sum is σ = 1442405662516. Its totient is φ = 1442400824304.

The previous prime is 1442403243403. The next prime is 1442403243427. The reversal of 1442403243409 is 9043423042441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1180325799184 + 262077444225 = 1086428^2 + 511935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442403243409 - 2¹⁵ = 1442403210641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442403243403) 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, 389407 + ... + 1742539.

It is an arithmetic number, because the mean of its divisors is an integer number (360601415629).

Almost surely, 2^{1442403243409} is an apocalyptic number.

It is an amenable number.

1442403243409 is a deficient number, since it is larger than the sum of its proper divisors (2419107).

1442403243409 is a wasteful number, since it uses less digits than its factorization.

1442403243409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419106.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 1442403243409 in words is "one trillion, four hundred forty-two billion, four hundred three million, two hundred forty-three thousand, four hundred nine".