1442021320 has 32 divisors (see below), whose sum is σ = 3245959800. Its totient is φ = 576557568.

The previous prime is 1442021299. The next prime is 1442021377. The reversal of 1442021320 is 231202441.

It can be written as a sum of positive squares in 4 ways, for example, as 1347036804 + 94984516 = 36702^2 + 9746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105436 + ... + 118324.

Almost surely, 2^1442021320 is an apocalyptic number.

1442021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442021320 is an abundant number, since it is smaller than the sum of its proper divisors (1803938480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1442021320 is a wasteful number, since it uses less digits than its factorization.

1442021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15697 (or 15693 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1442021320 is about 37973.9558118456. The cubic root of 1442021320 is about 1129.7713584444.

Adding to 1442021320 its reverse (231202441), we get a palindrome (1673223761).

The spelling of 1442021320 in words is "one billion, four hundred forty-two million, twenty-one thousand, three hundred twenty".