1244155104 has 72 divisors (see below), whose sum is σ = 3558659832. Its totient is φ = 412304640.

The previous prime is 1244155097. The next prime is 1244155111. The reversal of 1244155104 is 4015514421.

It is an interprime number because it is at equal distance from previous prime (1244155097) and next prime (1244155111).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37339 + ... + 62309.

It is an arithmetic number, because the mean of its divisors is an integer number (49425831).

Almost surely, 2^1244155104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244155104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779329916).

1244155104 is an abundant number, since it is smaller than the sum of its proper divisors (2314504728).

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

1244155104 is a wasteful number, since it uses less digits than its factorization.

1244155104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25160 (or 25149 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1244155104 is about 35272.5828938001. The cubic root of 1244155104 is about 1075.5357283593.

Adding to 1244155104 its reverse (4015514421), we get a palindrome (5259669525).

The spelling of 1244155104 in words is "one billion, two hundred forty-four million, one hundred fifty-five thousand, one hundred four".