1043216520 has 128 divisors (see below), whose sum is σ = 3276426240. Its totient is φ = 265224960.

The previous prime is 1043216519. The next prime is 1043216521. The reversal of 1043216520 is 256123401.

It is an interprime number because it is at equal distance from previous prime (1043216519) and next prime (1043216521).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1043216521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1509375 + ... + 1510065.

It is an arithmetic number, because the mean of its divisors is an integer number (25597080).

Almost surely, 2^1043216520 is an apocalyptic number.

1043216520 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 1043216520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638213120).

1043216520 is an abundant number, since it is smaller than the sum of its proper divisors (2233209720).

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

1043216520 is a wasteful number, since it uses less digits than its factorization.

1043216520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1043216520 is about 32298.8625186708. The cubic root of 1043216520 is about 1014.2028312508.

Adding to 1043216520 its reverse (256123401), we get a palindrome (1299339921).

The spelling of 1043216520 in words is "one billion, forty-three million, two hundred sixteen thousand, five hundred twenty".