1043240220 has 216 divisors, whose sum is σ = 3662851920. Its totient is φ = 239500800.

The previous prime is 1043240147. The next prime is 1043240221. The reversal of 1043240220 is 220423401.

1043240220 is a `hidden beast` number, since 10 + 432 + 4 + 0 + 220 = 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 = 1043240193 and 1043240202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043240221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 412560 + ... + 415080.

Almost surely, 2^1043240220 is an apocalyptic number.

1043240220 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 1043240220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831425960).

1043240220 is an abundant number, since it is smaller than the sum of its proper divisors (2619611700).

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

1043240220 is a wasteful number, since it uses less digits than its factorization.

1043240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1043240220 is about 32299.2294025724. The cubic root of 1043240220 is about 1014.2105114797.

Adding to 1043240220 its reverse (220423401), we get a palindrome (1263663621).

The spelling of 1043240220 in words is "one billion, forty-three million, two hundred forty thousand, two hundred twenty".