1248428081 has 2 divisors, whose sum is σ = 1248428082. Its totient is φ = 1248428080.

The previous prime is 1248428057. The next prime is 1248428101. The reversal of 1248428081 is 1808248421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 836135056 + 412293025 = 28916^2 + 20305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248428081 - 2¹⁰ = 1248427057 is a prime.

It is a super-2 number, since 2×1248428081² = 3117145346858685122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1248428011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624214040 + 624214041.

It is an arithmetic number, because the mean of its divisors is an integer number (624214041).

Almost surely, 2^1248428081 is an apocalyptic number.

It is an amenable number.

1248428081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248428081 is an equidigital number, since it uses as much as digits as its factorization.

1248428081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 1248428081 is about 35333.1017743985. The cubic root of 1248428081 is about 1076.7656093620.

The spelling of 1248428081 in words is "one billion, two hundred forty-eight million, four hundred twenty-eight thousand, eighty-one".