1244105345 has 24 divisors (see below), whose sum is σ = 1743674688. Its totient is φ = 849660000.

The previous prime is 1244105341. The next prime is 1244105393. The reversal of 1244105345 is 5435014421.

It is not a de Polignac number, because 1244105345 - 2² = 1244105341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244105341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51380 + ... + 71610.

It is an arithmetic number, because the mean of its divisors is an integer number (72653112).

Almost surely, 2^1244105345 is an apocalyptic number.

It is an amenable number.

1244105345 is a deficient number, since it is larger than the sum of its proper divisors (499569343).

1244105345 is a wasteful number, since it uses less digits than its factorization.

1244105345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501 (or 20494 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1244105345 is about 35271.8775372109. The cubic root of 1244105345 is about 1075.5213897677.

Adding to 1244105345 its reverse (5435014421), we get a palindrome (6679119766).

The spelling of 1244105345 in words is "one billion, two hundred forty-four million, one hundred five thousand, three hundred forty-five".