1140340212 has 144 divisors (see below), whose sum is σ = 3348438912. Its totient is φ = 323389440.

The previous prime is 1140340211. The next prime is 1140340219. The reversal of 1140340212 is 2120430411.

1140340212 is a `hidden beast` number, since 11 + 403 + 40 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140340211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1568193 + ... + 1568919.

It is an arithmetic number, because the mean of its divisors is an integer number (23253048).

Almost surely, 2^1140340212 is an apocalyptic number.

1140340212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140340212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674219456).

1140340212 is an abundant number, since it is smaller than the sum of its proper divisors (2208098700).

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

1140340212 is a wasteful number, since it uses less digits than its factorization.

1140340212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1140340212 is about 33768.9237613519. The cubic root of 1140340212 is about 1044.7478347320.

Adding to 1140340212 its reverse (2120430411), we get a palindrome (3260770623).

It can be divided in two parts, 11403 and 40212, that added together give a palindrome (51615).

The spelling of 1140340212 in words is "one billion, one hundred forty million, three hundred forty thousand, two hundred twelve".