1200043013 has 16 divisors (see below), whose sum is σ = 1321802496. Its totient is φ = 1082652480.

The previous prime is 1200043007. The next prime is 1200043027. The reversal of 1200043013 is 3103400021.

It is not a de Polignac number, because 1200043013 - 2²⁰ = 1198994437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200043003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183506 + ... + 189932.

It is an arithmetic number, because the mean of its divisors is an integer number (82612656).

Almost surely, 2^1200043013 is an apocalyptic number.

1200043013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1200043013 is a deficient number, since it is larger than the sum of its proper divisors (121759483).

1200043013 is a wasteful number, since it uses less digits than its factorization.

1200043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1200043013 is about 34641.6369849925. The cubic root of 1200043013 is about 1062.6712657345.

Adding to 1200043013 its reverse (3103400021), we get a palindrome (4303443034).

The spelling of 1200043013 in words is "one billion, two hundred million, forty-three thousand, thirteen".