1249840804 has 12 divisors (see below), whose sum is σ = 2188764144. Its totient is φ = 624479624.

The previous prime is 1249840789. The next prime is 1249840841. The reversal of 1249840804 is 4080489421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103774 + ... + 115189.

It is an arithmetic number, because the mean of its divisors is an integer number (182397012).

Almost surely, 2^1249840804 is an apocalyptic number.

It is an amenable number.

1249840804 is a deficient number, since it is larger than the sum of its proper divisors (938923340).

1249840804 is a wasteful number, since it uses less digits than its factorization.

1249840804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220394 (or 220392 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 1249840804 is about 35353.0876162182. The cubic root of 1249840804 is about 1077.1716127565.

The spelling of 1249840804 in words is "one billion, two hundred forty-nine million, eight hundred forty thousand, eight hundred four".