1442102321 has 6 divisors (see below), whose sum is σ = 1585120866. Its totient is φ = 1311002000.

The previous prime is 1442102317. The next prime is 1442102327. The reversal of 1442102321 is 1232012441.

It can be written as a sum of positive squares in only one way, i.e., 1436031025 + 6071296 = 37895^2 + 2464^2 .

It is not a de Polignac number, because 1442102321 - 2² = 1442102317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442102293 and 1442102302.

It is not an unprimeable number, because it can be changed into a prime (1442102327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5958980 + ... + 5959221.

It is an arithmetic number, because the mean of its divisors is an integer number (264186811).

Almost surely, 2^1442102321 is an apocalyptic number.

1442102321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1442102321 is a deficient number, since it is larger than the sum of its proper divisors (143018545).

1442102321 is a wasteful number, since it uses less digits than its factorization.

1442102321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11918223 (or 11918212 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1442102321 is about 37975.0223304740. The cubic root of 1442102321 is about 1129.7925118294.

Adding to 1442102321 its reverse (1232012441), we get a palindrome (2674114762).

The spelling of 1442102321 in words is "one billion, four hundred forty-two million, one hundred two thousand, three hundred twenty-one".