1043215020 has 72 divisors (see below), whose sum is σ = 3193510320. Its totient is φ = 275633280.

The previous prime is 1043215009. The next prime is 1043215027. The reversal of 1043215020 is 205123401.

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 = 1043214984 and 1043215002.

It is not an unprimeable number, because it can be changed into a prime (1043215027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6966 + ... + 46205.

It is an arithmetic number, because the mean of its divisors is an integer number (44354310).

Almost surely, 2^1043215020 is an apocalyptic number.

1043215020 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 1043215020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596755160).

1043215020 is an abundant number, since it is smaller than the sum of its proper divisors (2150295300).

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

1043215020 is a wasteful number, since it uses less digits than its factorization.

1043215020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53295 (or 53290 counting only the distinct ones).

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

The square root of 1043215020 is about 32298.8392980305. The cubic root of 1043215020 is about 1014.2023451564.

Adding to 1043215020 its reverse (205123401), we get a palindrome (1248338421).

It can be divided in two parts, 10432 and 15020, that added together give a palindrome (25452).

The spelling of 1043215020 in words is "one billion, forty-three million, two hundred fifteen thousand, twenty".