1244200055 has 16 divisors (see below), whose sum is σ = 1746015744. Its totient is φ = 833323680.

The previous prime is 1244200039. The next prime is 1244200057. The reversal of 1244200055 is 5500024421.

It is a happy number.

It is not a de Polignac number, because 1244200055 - 2⁴ = 1244200039 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 1244200055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244200057) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 411851 + ... + 414860.

It is an arithmetic number, because the mean of its divisors is an integer number (109125984).

Almost surely, 2^1244200055 is an apocalyptic number.

1244200055 is a deficient number, since it is larger than the sum of its proper divisors (501815689).

1244200055 is an equidigital number, since it uses as much as digits as its factorization.

1244200055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826766.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1244200055 is about 35273.2200826633. The cubic root of 1244200055 is about 1075.5486811452.

Adding to 1244200055 its reverse (5500024421), we get a palindrome (6744224476).

The spelling of 1244200055 in words is "one billion, two hundred forty-four million, two hundred thousand, fifty-five".