1442641920 has 192 divisors, whose sum is σ = 4660830720. Its totient is φ = 380928000.

The previous prime is 1442641891. The next prime is 1442641979. The reversal of 1442641920 is 291462441.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4638565 + ... + 4638875.

It is an arithmetic number, because the mean of its divisors is an integer number (24275160).

Almost surely, 2^1442641920 is an apocalyptic number.

1442641920 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 1442641920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2330415360).

1442641920 is an abundant number, since it is smaller than the sum of its proper divisors (3218188800).

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

1442641920 is a wasteful number, since it uses less digits than its factorization.

1442641920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1442641920 is about 37982.1263227850. The cubic root of 1442641920 is about 1129.9334077237.

The spelling of 1442641920 in words is "one billion, four hundred forty-two million, six hundred forty-one thousand, nine hundred twenty".