1248085321 has 12 divisors (see below), whose sum is σ = 1454336532. Its totient is φ = 1067958528.

The previous prime is 1248085303. The next prime is 1248085337. The reversal of 1248085321 is 1235808421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 363855625 + 884229696 = 19075^2 + 29736^2 .

It is not a de Polignac number, because 1248085321 - 2¹⁷ = 1247954249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248085301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7581 + ... + 50533.

It is an arithmetic number, because the mean of its divisors is an integer number (121194711).

Almost surely, 2^1248085321 is an apocalyptic number.

It is an amenable number.

1248085321 is a deficient number, since it is larger than the sum of its proper divisors (206251211).

1248085321 is an equidigital number, since it uses as much as digits as its factorization.

1248085321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43560 (or 43553 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1248085321 is about 35328.2510322829. The cubic root of 1248085321 is about 1076.6670571726.

The spelling of 1248085321 in words is "one billion, two hundred forty-eight million, eighty-five thousand, three hundred twenty-one".