1143873120 has 288 divisors, whose sum is σ = 3984422400. Its totient is φ = 275638272.

The previous prime is 1143873103. The next prime is 1143873127. The reversal of 1143873120 is 213783411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143873127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4785961 + ... + 4786199.

It is an arithmetic number, because the mean of its divisors is an integer number (13834800).

Almost surely, 2^1143873120 is an apocalyptic number.

1143873120 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 1143873120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992211200).

1143873120 is an abundant number, since it is smaller than the sum of its proper divisors (2840549280).

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

1143873120 is a wasteful number, since it uses less digits than its factorization.

1143873120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1143873120 is about 33821.1933556461. The cubic root of 1143873120 is about 1045.8256396352.

The spelling of 1143873120 in words is "one billion, one hundred forty-three million, eight hundred seventy-three thousand, one hundred twenty".