1143117520 has 80 divisors (see below), whose sum is σ = 2810802240. Its totient is φ = 431142912.

The previous prime is 1143117517. The next prime is 1143117523. The reversal of 1143117520 is 257113411.

It is an interprime number because it is at equal distance from previous prime (1143117517) and next prime (1143117523).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143117523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 343384 + ... + 346696.

It is an arithmetic number, because the mean of its divisors is an integer number (35135028).

Almost surely, 2^1143117520 is an apocalyptic number.

1143117520 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 1143117520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405401120).

1143117520 is an abundant number, since it is smaller than the sum of its proper divisors (1667684720).

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

1143117520 is a wasteful number, since it uses less digits than its factorization.

1143117520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3566 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1143117520 is about 33810.0209996977. The cubic root of 1143117520 is about 1045.5953110841.

The spelling of 1143117520 in words is "one billion, one hundred forty-three million, one hundred seventeen thousand, five hundred twenty".