1200043434402 has 80 divisors (see below), whose sum is σ = 2838913403040. Its totient is φ = 377836244352.

The previous prime is 1200043434371. The next prime is 1200043434449. The reversal of 1200043434402 is 2044343400021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 458833 + ... + 1615739.

It is an arithmetic number, because the mean of its divisors is an integer number (35486417538).

Almost surely, 2^{1200043434402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200043434402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419456701520).

1200043434402 is an abundant number, since it is smaller than the sum of its proper divisors (1638869968638).

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

1200043434402 is a wasteful number, since it uses less digits than its factorization.

1200043434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157277 (or 1157268 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 1200043434402 its reverse (2044343400021), we get a palindrome (3244386834423).

The spelling of 1200043434402 in words is "one trillion, two hundred billion, forty-three million, four hundred thirty-four thousand, four hundred two".