1442143872 has 128 divisors (see below), whose sum is σ = 4583880000. Its totient is φ = 443722752.

The previous prime is 1442143867. The next prime is 1442143873. The reversal of 1442143872 is 2783412441.

1442143872 is a `hidden beast` number, since 1 + 442 + 143 + 8 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1442143873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28879 + ... + 60977.

Almost surely, 2^1442143872 is an apocalyptic number.

1442143872 is a gapful number since it is divisible by the number (12) 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 1442143872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2291940000).

1442143872 is an abundant number, since it is smaller than the sum of its proper divisors (3141736128).

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

1442143872 is a wasteful number, since it uses less digits than its factorization.

1442143872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32135 (or 32117 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 1442143872 is about 37975.5694098193. The cubic root of 1442143872 is about 1129.8033625522.

The spelling of 1442143872 in words is "one billion, four hundred forty-two million, one hundred forty-three thousand, eight hundred seventy-two".