1248727871 has 8 divisors (see below), whose sum is σ = 1268546400. Its totient is φ = 1229061600.

The previous prime is 1248727867. The next prime is 1248727873. The reversal of 1248727871 is 1787278421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1248727871 - 2² = 1248727867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248727873) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21476 + ... + 54393.

It is an arithmetic number, because the mean of its divisors is an integer number (158568300).

Almost surely, 2^1248727871 is an apocalyptic number.

1248727871 is a deficient number, since it is larger than the sum of its proper divisors (19818529).

1248727871 is a wasteful number, since it uses less digits than its factorization.

1248727871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76129.

The product of its digits is 351232, while the sum is 47.

The square root of 1248727871 is about 35337.3438588698. The cubic root of 1248727871 is about 1076.8517918000.

The spelling of 1248727871 in words is "one billion, two hundred forty-eight million, seven hundred twenty-seven thousand, eight hundred seventy-one".