1442243421321 has 16 divisors (see below), whose sum is σ = 2038068115200. Its totient is φ = 904066046208.

The previous prime is 1442243421317. The next prime is 1442243421331. The reversal of 1442243421321 is 1231243422441.

It is not a de Polignac number, because 1442243421321 - 2² = 1442243421317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1442243421331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13555906 + ... + 13661883.

It is an arithmetic number, because the mean of its divisors is an integer number (127379257200).

Almost surely, 2^{1442243421321} is an apocalyptic number.

It is an amenable number.

1442243421321 is a deficient number, since it is larger than the sum of its proper divisors (595824693879).

1442243421321 is a wasteful number, since it uses less digits than its factorization.

1442243421321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27218848.

The product of its digits is 36864, while the sum is 33.

Adding to 1442243421321 its reverse (1231243422441), we get a palindrome (2673486843762).

The spelling of 1442243421321 in words is "one trillion, four hundred forty-two billion, two hundred forty-three million, four hundred twenty-one thousand, three hundred twenty-one".