1043120520 has 192 divisors, whose sum is σ = 3843403200. Its totient is φ = 243233280.

The previous prime is 1043120513. The next prime is 1043120537. The reversal of 1043120520 is 250213401.

1043120520 is a `hidden beast` number, since 10 + 431 + 205 + 20 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1043120493 and 1043120502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83055 + ... + 94785.

It is an arithmetic number, because the mean of its divisors is an integer number (20017725).

Almost surely, 2^1043120520 is an apocalyptic number.

1043120520 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 1043120520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921701600).

1043120520 is an abundant number, since it is smaller than the sum of its proper divisors (2800282680).

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

1043120520 is a wasteful number, since it uses less digits than its factorization.

1043120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780 (or 11773 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1043120520 is about 32297.3763640330. The cubic root of 1043120520 is about 1014.1717202728.

Adding to 1043120520 its reverse (250213401), we get a palindrome (1293333921).

The spelling of 1043120520 in words is "one billion, forty-three million, one hundred twenty thousand, five hundred twenty".