1142213112 has 24 divisors (see below), whose sum is σ = 3093494040. Its totient is φ = 380737680.

The previous prime is 1142213099. The next prime is 1142213117. The reversal of 1142213112 is 2113122411.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142213117) 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 5 ways as a sum of consecutive naturals, for example, 7931964 + ... + 7932107.

It is an arithmetic number, because the mean of its divisors is an integer number (128895585).

Almost surely, 2^1142213112 is an apocalyptic number.

1142213112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142213112 is an abundant number, since it is smaller than the sum of its proper divisors (1951280928).

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

1142213112 is a wasteful number, since it uses less digits than its factorization.

1142213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15864083 (or 15864076 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1142213112 is about 33796.6435019811. The cubic root of 1142213112 is about 1045.3194880977.

Adding to 1142213112 its reverse (2113122411), we get a palindrome (3255335523).

The spelling of 1142213112 in words is "one billion, one hundred forty-two million, two hundred thirteen thousand, one hundred twelve".