1043355420 has 144 divisors (see below), whose sum is σ = 3231027072. Its totient is φ = 272471040.

The previous prime is 1043355409. The next prime is 1043355461. The reversal of 1043355420 is 245533401.

1043355420 is a `hidden beast` number, since 104 + 3 + 3 + 554 + 2 + 0 = 666.

1043355420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3560794 + ... + 3561086.

It is an arithmetic number, because the mean of its divisors is an integer number (22437688).

Almost surely, 2^1043355420 is an apocalyptic number.

1043355420 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 1043355420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615513536).

1043355420 is an abundant number, since it is smaller than the sum of its proper divisors (2187671652).

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

1043355420 is a wasteful number, since it uses less digits than its factorization.

1043355420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1043355420 is about 32301.0126776236. The cubic root of 1043355420 is about 1014.2478415687.

Adding to 1043355420 its reverse (245533401), we get a palindrome (1288888821).

The spelling of 1043355420 in words is "one billion, forty-three million, three hundred fifty-five thousand, four hundred twenty".