1442443400 has 48 divisors (see below), whose sum is σ = 3371147700. Its totient is φ = 573972480.

The previous prime is 1442443351. The next prime is 1442443403. The reversal of 1442443400 is 43442441.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 550465444 + 891977956 = 23462^2 + 29866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1442443400.

It is not an unprimeable number, because it can be changed into a prime (1442443403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19916 + ... + 57284.

Almost surely, 2^1442443400 is an apocalyptic number.

1442443400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1442443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685573850).

1442443400 is an abundant number, since it is smaller than the sum of its proper divisors (1928704300).

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

1442443400 is a wasteful number, since it uses less digits than its factorization.

1442443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37578 (or 37569 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1442443400 is about 37979.5128984035. The cubic root of 1442443400 is about 1129.8815758110.

Adding to 1442443400 its reverse (43442441), we get a palindrome (1485885841).

The spelling of 1442443400 in words is "one billion, four hundred forty-two million, four hundred forty-three thousand, four hundred".