1244423245 has 16 divisors (see below), whose sum is σ = 1608918192. Its totient is φ = 918535680.

The previous prime is 1244423153. The next prime is 1244423249. The reversal of 1244423245 is 5423244421.

It can be written as a sum of positive squares in 8 ways, for example, as 106440489 + 1137982756 = 10317^2 + 33734^2 .

It is not a de Polignac number, because 1244423245 - 2¹¹ = 1244421197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244423249) 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 15 ways as a sum of consecutive naturals, for example, 249799 + ... + 254731.

It is an arithmetic number, because the mean of its divisors is an integer number (100557387).

Almost surely, 2^1244423245 is an apocalyptic number.

It is an amenable number.

1244423245 is a deficient number, since it is larger than the sum of its proper divisors (364494947).

1244423245 is a wasteful number, since it uses less digits than its factorization.

1244423245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832.

The product of its digits is 30720, while the sum is 31.

The square root of 1244423245 is about 35276.3836723664. The cubic root of 1244423245 is about 1075.6129894952.

Adding to 1244423245 its reverse (5423244421), we get a palindrome (6667667666).

The spelling of 1244423245 in words is "one billion, two hundred forty-four million, four hundred twenty-three thousand, two hundred forty-five".