1264123212 has 24 divisors (see below), whose sum is σ = 3217768512. Its totient is φ = 383067600.

The previous prime is 1264123207. The next prime is 1264123243. The reversal of 1264123212 is 2123214621.

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 4788214 + ... + 4788477.

It is an arithmetic number, because the mean of its divisors is an integer number (134073688).

Almost surely, 2^1264123212 is an apocalyptic number.

1264123212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1264123212 is an abundant number, since it is smaller than the sum of its proper divisors (1953645300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264123212 is a wasteful number, since it uses less digits than its factorization.

1264123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576709 (or 9576707 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1264123212 is about 35554.5104311675. The cubic root of 1264123212 is about 1081.2591658060.

Adding to 1264123212 its reverse (2123214621), we get a palindrome (3387337833).

It can be divided in two parts, 12641 and 23212, that added together give a palindrome (35853).

The spelling of 1264123212 in words is "one billion, two hundred sixty-four million, one hundred twenty-three thousand, two hundred twelve".