1266123148 has 12 divisors (see below), whose sum is σ = 2257521840. Its totient is φ = 621116912.

The previous prime is 1266123109. The next prime is 1266123149. The reversal of 1266123148 is 8413216621.

It is not an unprimeable number, because it can be changed into a prime (1266123149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2985928 + ... + 2986351.

It is an arithmetic number, because the mean of its divisors is an integer number (188126820).

Almost surely, 2^1266123148 is an apocalyptic number.

It is an amenable number.

1266123148 is a deficient number, since it is larger than the sum of its proper divisors (991398692).

1266123148 is a wasteful number, since it uses less digits than its factorization.

1266123148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972336 (or 5972334 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 1266123148 is about 35582.6242427396. The cubic root of 1266123148 is about 1081.8290759032.

Adding to 1266123148 its reverse (8413216621), we get a palindrome (9679339769).

The spelling of 1266123148 in words is "one billion, two hundred sixty-six million, one hundred twenty-three thousand, one hundred forty-eight".