1143222340 has 192 divisors, whose sum is σ = 2840463360. Its totient is φ = 383201280.

The previous prime is 1143222299. The next prime is 1143222361. The reversal of 1143222340 is 432223411.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15660544 + ... + 15660616.

It is an arithmetic number, because the mean of its divisors is an integer number (14794080).

Almost surely, 2^1143222340 is an apocalyptic number.

1143222340 is a gapful number since it is divisible by the number (10) 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 1143222340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420231680).

1143222340 is an abundant number, since it is smaller than the sum of its proper divisors (1697241020).

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

1143222340 is a wasteful number, since it uses less digits than its factorization.

1143222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1143222340 is about 33811.5710962978. The cubic root of 1143222340 is about 1045.6272692887.

Adding to 1143222340 its reverse (432223411), we get a palindrome (1575445751).

It can be divided in two parts, 1 and 143222340, that added together give a palindrome (143222341).

The spelling of 1143222340 in words is "one billion, one hundred forty-three million, two hundred twenty-two thousand, three hundred forty".