1200444040 has 16 divisors (see below), whose sum is σ = 2700999180. Its totient is φ = 480177600.

The previous prime is 1200444017. The next prime is 1200444053. The reversal of 1200444040 is 404440021.

It can be written as a sum of positive squares in 2 ways, for example, as 1115693604 + 84750436 = 33402^2 + 9206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200443999 and 1200444017.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15005511 + ... + 15005590.

Almost surely, 2^1200444040 is an apocalyptic number.

1200444040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200444040 is an abundant number, since it is smaller than the sum of its proper divisors (1500555140).

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

1200444040 is a wasteful number, since it uses less digits than its factorization.

1200444040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30011112 (or 30011108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1200444040 is about 34647.4247239243. The cubic root of 1200444040 is about 1062.7896260497.

Adding to 1200444040 its reverse (404440021), we get a palindrome (1604884061).

The spelling of 1200444040 in words is "one billion, two hundred million, four hundred forty-four thousand, forty".