1200440043 has 12 divisors (see below), whose sum is σ = 1891602648. Its totient is φ = 727539360.

The previous prime is 1200440041. The next prime is 1200440047. The reversal of 1200440043 is 3400440021.

1200440043 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1200440043 - 2¹ = 1200440041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200439998 and 1200440025.

It is not an unprimeable number, because it can be changed into a prime (1200440041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6062730 + ... + 6062927.

It is an arithmetic number, because the mean of its divisors is an integer number (157633554).

Almost surely, 2^1200440043 is an apocalyptic number.

1200440043 is a deficient number, since it is larger than the sum of its proper divisors (691162605).

1200440043 is a wasteful number, since it uses less digits than its factorization.

1200440043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125674 (or 12125671 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1200440043 is about 34647.3670428216. The cubic root of 1200440043 is about 1062.7884464931.

Adding to 1200440043 its reverse (3400440021), we get a palindrome (4600880064).

The spelling of 1200440043 in words is "one billion, two hundred million, four hundred forty thousand, forty-three".