1142181128 has 32 divisors (see below), whose sum is σ = 2341366560. Its totient is φ = 518042880.

The previous prime is 1142181113. The next prime is 1142181151. The reversal of 1142181128 is 8211812411.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1142181128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27200 + ... + 54992.

It is an arithmetic number, because the mean of its divisors is an integer number (73167705).

Almost surely, 2^1142181128 is an apocalyptic number.

It is an amenable number.

1142181128 is an abundant number, since it is smaller than the sum of its proper divisors (1199185432).

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

1142181128 is a wasteful number, since it uses less digits than its factorization.

1142181128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28277 (or 28273 counting only the distinct ones).

The product of its digits is 1024, while the sum is 29.

The square root of 1142181128 is about 33796.1703155846. The cubic root of 1142181128 is about 1045.3097310713.

Adding to 1142181128 its reverse (8211812411), we get a palindrome (9353993539).

The spelling of 1142181128 in words is "one billion, one hundred forty-two million, one hundred eighty-one thousand, one hundred twenty-eight".