1043225400 has 384 divisors, whose sum is σ = 4124736000. Its totient is φ = 212336640.

The previous prime is 1043225399. The next prime is 1043225411. The reversal of 1043225400 is 45223401.

It is a Cunningham number, because it is equal to 32299²-1.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1356216 + ... + 1356984.

It is an arithmetic number, because the mean of its divisors is an integer number (10741500).

Almost surely, 2^1043225400 is an apocalyptic number.

1043225400 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 1043225400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062368000).

1043225400 is an abundant number, since it is smaller than the sum of its proper divisors (3081510600).

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

1043225400 is a wasteful number, since it uses less digits than its factorization.

1043225400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1043225400 is about 32298.9999845196. Note that the first 4 decimals coincide. The cubic root of 1043225400 is about 1014.2057089198.

Adding to 1043225400 its reverse (45223401), we get a palindrome (1088448801).

The spelling of 1043225400 in words is "one billion, forty-three million, two hundred twenty-five thousand, four hundred".