1200043434400 has 72 divisors (see below), whose sum is σ = 2956985740800. Its totient is φ = 475531196160.

The previous prime is 1200043434371. The next prime is 1200043434449. The reversal of 1200043434400 is 44343400021.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6924000 + ... + 7095199.

It is an arithmetic number, because the mean of its divisors is an integer number (41069246400).

Almost surely, 2^{1200043434400} is an apocalyptic number.

1200043434400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200043434400 is an abundant number, since it is smaller than the sum of its proper divisors (1756942306400).

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

1200043434400 is a wasteful number, since it uses less digits than its factorization.

1200043434400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14019326 (or 14019313 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 1200043434400 its reverse (44343400021), we get a palindrome (1244386834421).

The spelling of 1200043434400 in words is "one trillion, two hundred billion, forty-three million, four hundred thirty-four thousand, four hundred".