1442144321 has 8 divisors (see below), whose sum is σ = 1515675840. Its totient is φ = 1369515312.

The previous prime is 1442144317. The next prime is 1442144351. The reversal of 1442144321 is 1234412441.

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

It is not a de Polignac number, because 1442144321 - 2² = 1442144317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1442144311) 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, 222350 + ... + 228743.

It is an arithmetic number, because the mean of its divisors is an integer number (189459480).

Almost surely, 2^1442144321 is an apocalyptic number.

It is an amenable number.

1442144321 is a deficient number, since it is larger than the sum of its proper divisors (73531519).

1442144321 is a wasteful number, since it uses less digits than its factorization.

1442144321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451255.

The product of its digits is 3072, while the sum is 26.

The square root of 1442144321 is about 37975.5753215142. The cubic root of 1442144321 is about 1129.8034798040.

Adding to 1442144321 its reverse (1234412441), we get a palindrome (2676556762).

The spelling of 1442144321 in words is "one billion, four hundred forty-two million, one hundred forty-four thousand, three hundred twenty-one".