1142120132 has 12 divisors (see below), whose sum is σ = 2005139136. Its totient is φ = 569223240.

The previous prime is 1142120117. The next prime is 1142120173. The reversal of 1142120132 is 2310212411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142120132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457808 + ... + 460295.

It is an arithmetic number, because the mean of its divisors is an integer number (167094928).

Almost surely, 2^1142120132 is an apocalyptic number.

It is an amenable number.

1142120132 is a deficient number, since it is larger than the sum of its proper divisors (863019004).

1142120132 is a wasteful number, since it uses less digits than its factorization.

1142120132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918418 (or 918416 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1142120132 is about 33795.2678935972. The cubic root of 1142120132 is about 1045.2911231506.

Adding to 1142120132 its reverse (2310212411), we get a palindrome (3452332543).

The spelling of 1142120132 in words is "one billion, one hundred forty-two million, one hundred twenty thousand, one hundred thirty-two".