1249842486 has 32 divisors (see below), whose sum is σ = 2532816000. Its totient is φ = 411111360.

The previous prime is 1249842463. The next prime is 1249842521. The reversal of 1249842486 is 6842489421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302865 + ... + 306963.

It is an arithmetic number, because the mean of its divisors is an integer number (79150500).

Almost surely, 2^1249842486 is an apocalyptic number.

1249842486 is an abundant number, since it is smaller than the sum of its proper divisors (1282973514).

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

1249842486 is a wasteful number, since it uses less digits than its factorization.

1249842486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764.

The product of its digits is 884736, while the sum is 48.

The square root of 1249842486 is about 35353.1114047972. Note that the first 3 decimals coincide. The cubic root of 1249842486 is about 1077.1720959652.

The spelling of 1249842486 in words is "one billion, two hundred forty-nine million, eight hundred forty-two thousand, four hundred eighty-six".