1249744960 has 56 divisors (see below), whose sum is σ = 2979115200. Its totient is φ = 499367424.

The previous prime is 1249744933. The next prime is 1249744973. The reversal of 1249744960 is 694479421.

It is a self number, because there is not a number n which added to its sum of digits gives 1249744960.

It is an unprimeable number.

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, 461691 + ... + 464389.

Almost surely, 2^1249744960 is an apocalyptic number.

1249744960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249744960 is an abundant number, since it is smaller than the sum of its proper divisors (1729370240).

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

1249744960 is a wasteful number, since it uses less digits than its factorization.

1249744960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163 (or 4153 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1249744960 is about 35351.7320650630. The cubic root of 1249744960 is about 1077.1440777630.

The spelling of 1249744960 in words is "one billion, two hundred forty-nine million, seven hundred forty-four thousand, nine hundred sixty".