1142119636 has 72 divisors (see below), whose sum is σ = 2482099200. Its totient is φ = 456890112.

The previous prime is 1142119609. The next prime is 1142119637. The reversal of 1142119636 is 6369112411.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142119637) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 421815 + ... + 424513.

It is an arithmetic number, because the mean of its divisors is an integer number (34473600).

Almost surely, 2^1142119636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142119636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241049600).

1142119636 is an abundant number, since it is smaller than the sum of its proper divisors (1339979564).

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

1142119636 is a wasteful number, since it uses less digits than its factorization.

1142119636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2852 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 1142119636 is about 33795.2605552909. The cubic root of 1142119636 is about 1045.2909718342.

It can be divided in two parts, 114211963 and 6, that added together give a square (114211969 = 10687²).

The spelling of 1142119636 in words is "one billion, one hundred forty-two million, one hundred nineteen thousand, six hundred thirty-six".