1442445521 has 8 divisors (see below), whose sum is σ = 1577505888. Its totient is φ = 1308040000.

The previous prime is 1442445503. The next prime is 1442445533. The reversal of 1442445521 is 1255442441.

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

It is a cyclic number.

It is not a de Polignac number, because 1442445521 - 2⁶ = 1442445457 is a prime.

It is a super-2 number, since 2×1442445521² = 4161298162105922882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1442445551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159095 + ... + 167916.

It is an arithmetic number, because the mean of its divisors is an integer number (197188236).

Almost surely, 2^1442445521 is an apocalyptic number.

1442445521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1442445521 is a deficient number, since it is larger than the sum of its proper divisors (135060367).

1442445521 is a wasteful number, since it uses less digits than its factorization.

1442445521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327423.

The product of its digits is 25600, while the sum is 32.

The square root of 1442445521 is about 37979.5408213422. The cubic root of 1442445521 is about 1129.8821296115.

Adding to 1442445521 its reverse (1255442441), we get a palindrome (2697887962).

The spelling of 1442445521 in words is "one billion, four hundred forty-two million, four hundred forty-five thousand, five hundred twenty-one".