1143520 has 48 divisors (see below), whose sum is σ = 3090528. Its totient is φ = 391680.

The previous prime is 1143487. The next prime is 1143529. The reversal of 1143520 is 253411.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a d-powerful number, because it can be written as 1 + 1 + 4¹⁰ + 3¹⁰ + 5⁵ + 2¹⁵ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 1143494 and 1143503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (64386).

2^1143520 is an apocalyptic number.

1143520 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 1143520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545264).

1143520 is an abundant number, since it is smaller than the sum of its proper divisors (1947008).

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

1143520 is a wasteful number, since it uses less digits than its factorization.

1143520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1143520 is about 1069.3549457500. The cubic root of 1143520 is about 104.5718011160.

Adding to 1143520 its reverse (253411), we get a palindrome (1396931).

The spelling of 1143520 in words is "one million, one hundred forty-three thousand, five hundred twenty".