1005241220 has 96 divisors (see below), whose sum is σ = 2258710272. Its totient is φ = 375001088.

The previous prime is 1005241177. The next prime is 1005241231. The reversal of 1005241220 is 221425001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4314224 + ... + 4314456.

It is an arithmetic number, because the mean of its divisors is an integer number (23528232).

Almost surely, 2^1005241220 is an apocalyptic number.

1005241220 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 1005241220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129355136).

1005241220 is an abundant number, since it is smaller than the sum of its proper divisors (1253469052).

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

1005241220 is a wasteful number, since it uses less digits than its factorization.

1005241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1005241220 is about 31705.5392636681. The cubic root of 1005241220 is about 1001.7440299247.

Adding to 1005241220 its reverse (221425001), we get a palindrome (1226666221).

The spelling of 1005241220 in words is "one billion, five million, two hundred forty-one thousand, two hundred twenty".