1043400304320 has 224 divisors, whose sum is σ = 3620014502400. Its totient is φ = 252521717760.

The previous prime is 1043400304259. The next prime is 1043400304333. The reversal of 1043400304320 is 234030043401.

It is a super-2 number, since 2×1043400304320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6242964 + ... + 6407916.

Almost surely, 2^{1043400304320} is an apocalyptic number.

1043400304320 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 1043400304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1810007251200).

1043400304320 is an abundant number, since it is smaller than the sum of its proper divisors (2576614198080).

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

1043400304320 is a wasteful number, since it uses less digits than its factorization.

1043400304320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165583 (or 165573 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 1043400304320 its reverse (234030043401), we get a palindrome (1277430347721).

The spelling of 1043400304320 in words is "one trillion, forty-three billion, four hundred million, three hundred four thousand, three hundred twenty".