1200321343040 has 56 divisors (see below), whose sum is σ = 2982537616320. Its totient is φ = 459253380608.

The previous prime is 1200321343027. The next prime is 1200321343069. The reversal of 1200321343040 is 403431230021.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 1200321342997 and 1200321343015.

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 7 ways as a sum of consecutive naturals, for example, 81536210 + ... + 81550929.

Almost surely, 2^{1200321343040} is an apocalyptic number.

1200321343040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200321343040 is an abundant number, since it is smaller than the sum of its proper divisors (1782216273280).

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

1200321343040 is a wasteful number, since it uses less digits than its factorization.

1200321343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163087179 (or 163087169 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1200321343040 its reverse (403431230021), we get a palindrome (1603752573061).

The spelling of 1200321343040 in words is "one trillion, two hundred billion, three hundred twenty-one million, three hundred forty-three thousand, forty".