1143104340 has 144 divisors (see below), whose sum is σ = 3738776832. Its totient is φ = 260193024.

The previous prime is 1143104329. The next prime is 1143104363. The reversal of 1143104340 is 434013411.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 860757 + ... + 862083.

It is an arithmetic number, because the mean of its divisors is an integer number (25963728).

Almost surely, 2^1143104340 is an apocalyptic number.

1143104340 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 1143104340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1869388416).

1143104340 is an abundant number, since it is smaller than the sum of its proper divisors (2595672492).

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

1143104340 is a wasteful number, since it uses less digits than its factorization.

1143104340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1143104340 is about 33809.8260865092. The cubic root of 1143104340 is about 1045.5912925415.

Adding to 1143104340 its reverse (434013411), we get a palindrome (1577117751).

The spelling of 1143104340 in words is "one billion, one hundred forty-three million, one hundred four thousand, three hundred forty".