1142042120 has 32 divisors (see below), whose sum is σ = 2704838400. Its totient is φ = 432773568.

The previous prime is 1142042107. The next prime is 1142042129. The reversal of 1142042120 is 212402411.

It is not an unprimeable number, because it can be changed into a prime (1142042129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750584 + ... + 752103.

It is an arithmetic number, because the mean of its divisors is an integer number (84526200).

Almost surely, 2^1142042120 is an apocalyptic number.

1142042120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142042120 is an abundant number, since it is smaller than the sum of its proper divisors (1562796280).

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

1142042120 is a wasteful number, since it uses less digits than its factorization.

1142042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502717 (or 1502713 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1142042120 is about 33794.1136886293. The cubic root of 1142042120 is about 1045.2673232293.

Adding to 1142042120 its reverse (212402411), we get a palindrome (1354444531).

The spelling of 1142042120 in words is "one billion, one hundred forty-two million, forty-two thousand, one hundred twenty".