1266123130 has 32 divisors (see below), whose sum is σ = 2330622720. Its totient is φ = 495011520.

The previous prime is 1266123109. The next prime is 1266123149. The reversal of 1266123130 is 313216621.

It is a junction number, because it is equal to n+sod(n) for n = 1266123095 and 1266123104.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 497401 + ... + 499939.

It is an arithmetic number, because the mean of its divisors is an integer number (72831960).

Almost surely, 2^1266123130 is an apocalyptic number.

1266123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266123130 is a deficient number, since it is larger than the sum of its proper divisors (1064499590).

1266123130 is a wasteful number, since it uses less digits than its factorization.

1266123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1266123130 is about 35582.6239898072. The cubic root of 1266123130 is about 1081.8290707765.

Adding to 1266123130 its reverse (313216621), we get a palindrome (1579339751).

The spelling of 1266123130 in words is "one billion, two hundred sixty-six million, one hundred twenty-three thousand, one hundred thirty".