1442330520121 has 4 divisors (see below), whose sum is σ = 1442729288052. Its totient is φ = 1441931752192.

The previous prime is 1442330520049. The next prime is 1442330520131. The reversal of 1442330520121 is 1210250332441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8717023225 + 1433613496896 = 93365^2 + 1197336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442330520121 - 2¹³ = 1442330511929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442330520121.

It is not an unprimeable number, because it can be changed into a prime (1442330520131) 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, 199378540 + ... + 199385773.

It is an arithmetic number, because the mean of its divisors is an integer number (360682322013).

Almost surely, 2^{1442330520121} is an apocalyptic number.

It is an amenable number.

1442330520121 is a deficient number, since it is larger than the sum of its proper divisors (398767931).

1442330520121 is an equidigital number, since it uses as much as digits as its factorization.

1442330520121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398767930.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1442330520121 its reverse (1210250332441), we get a palindrome (2652580852562).

The spelling of 1442330520121 in words is "one trillion, four hundred forty-two billion, three hundred thirty million, five hundred twenty thousand, one hundred twenty-one".