1200043423 has 16 divisors (see below), whose sum is σ = 1290292416. Its totient is φ = 1113488640.

The previous prime is 1200043409. The next prime is 1200043483. The reversal of 1200043423 is 3243400021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200043423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200043423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200043483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96561 + ... + 108277.

It is an arithmetic number, because the mean of its divisors is an integer number (80643276).

Almost surely, 2^1200043423 is an apocalyptic number.

1200043423 is a deficient number, since it is larger than the sum of its proper divisors (90248993).

1200043423 is a wasteful number, since it uses less digits than its factorization.

1200043423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11874.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1200043423 is about 34641.6429027262. The cubic root of 1200043423 is about 1062.6713867566.

Adding to 1200043423 its reverse (3243400021), we get a palindrome (4443443444).

The spelling of 1200043423 in words is "one billion, two hundred million, forty-three thousand, four hundred twenty-three".