1244402105 has 8 divisors (see below), whose sum is σ = 1521457992. Its totient is φ = 976738048.

The previous prime is 1244402101. The next prime is 1244402129. The reversal of 1244402105 is 5012044421.

It can be written as a sum of positive squares in 4 ways, for example, as 445378816 + 799023289 = 21104^2 + 28267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244402105 - 2² = 1244402101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244402101) 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 7 ways as a sum of consecutive naturals, for example, 2347664 + ... + 2348193.

It is an arithmetic number, because the mean of its divisors is an integer number (190182249).

Almost surely, 2^1244402105 is an apocalyptic number.

It is an amenable number.

1244402105 is a deficient number, since it is larger than the sum of its proper divisors (277055887).

1244402105 is an equidigital number, since it uses as much as digits as its factorization.

1244402105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695915.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1244402105 is about 35276.0840372057. The cubic root of 1244402105 is about 1075.6068986984.

Adding to 1244402105 its reverse (5012044421), we get a palindrome (6256446526).

The spelling of 1244402105 in words is "one billion, two hundred forty-four million, four hundred two thousand, one hundred five".