1305145244 has 24 divisors (see below), whose sum is σ = 2465342880. Its totient is φ = 600992064.

The previous prime is 1305145213. The next prime is 1305145249. The reversal of 1305145244 is 4425415031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305145249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5759 + ... + 51414.

It is an arithmetic number, because the mean of its divisors is an integer number (102722620).

Almost surely, 2^1305145244 is an apocalyptic number.

It is an amenable number.

1305145244 is a deficient number, since it is larger than the sum of its proper divisors (1160197636).

1305145244 is a wasteful number, since it uses less digits than its factorization.

1305145244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57629 (or 57627 counting only the distinct ones).

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

The square root of 1305145244 is about 36126.7939900567. The cubic root of 1305145244 is about 1092.8308549743.

The spelling of 1305145244 in words is "one billion, three hundred five million, one hundred forty-five thousand, two hundred forty-four".