1442443420 has 72 divisors (see below), whose sum is σ = 3338193600. Its totient is φ = 523163520.

The previous prime is 1442443417. The next prime is 1442443433. The reversal of 1442443420 is 243442441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1739566 + ... + 1740394.

It is an arithmetic number, because the mean of its divisors is an integer number (46363800).

Almost surely, 2^1442443420 is an apocalyptic number.

1442443420 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 1442443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669096800).

1442443420 is an abundant number, since it is smaller than the sum of its proper divisors (1895750180).

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

1442443420 is a wasteful number, since it uses less digits than its factorization.

1442443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1442443420 is about 37979.5131617034. The cubic root of 1442443420 is about 1129.8815810331.

Adding to 1442443420 its reverse (243442441), we get a palindrome (1685885861).

The spelling of 1442443420 in words is "one billion, four hundred forty-two million, four hundred forty-three thousand, four hundred twenty".