1275248149 has 16 divisors (see below), whose sum is σ = 1557595008. Its totient is φ = 1019146752.

The previous prime is 1275248141. The next prime is 1275248167. The reversal of 1275248149 is 9418425721.

It is not a de Polignac number, because 1275248149 - 2³ = 1275248141 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 (1275248141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37344 + ... + 62809.

It is an arithmetic number, because the mean of its divisors is an integer number (97349688).

Almost surely, 2^1275248149 is an apocalyptic number.

It is an amenable number.

1275248149 is a deficient number, since it is larger than the sum of its proper divisors (282346859).

1275248149 is a wasteful number, since it uses less digits than its factorization.

1275248149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100284.

The product of its digits is 161280, while the sum is 43.

The square root of 1275248149 is about 35710.6167546852. The cubic root of 1275248149 is about 1084.4217859640.

The spelling of 1275248149 in words is "one billion, two hundred seventy-five million, two hundred forty-eight thousand, one hundred forty-nine".