1263126036 has 12 divisors (see below), whose sum is σ = 2947294112. Its totient is φ = 421042008.

The previous prime is 1263126013. The next prime is 1263126037. The reversal of 1263126036 is 6306213621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1263125994 and 1263126012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263126037) 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 3 ways as a sum of consecutive naturals, for example, 52630240 + ... + 52630263.

Almost surely, 2^1263126036 is an apocalyptic number.

It is an amenable number.

1263126036 is an abundant number, since it is smaller than the sum of its proper divisors (1684168076).

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

1263126036 is a wasteful number, since it uses less digits than its factorization.

1263126036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105260510 (or 105260508 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1263126036 is about 35540.4844649028. The cubic root of 1263126036 is about 1080.9747817865.

Adding to 1263126036 its reverse (6306213621), we get a palindrome (7569339657).

The spelling of 1263126036 in words is "one billion, two hundred sixty-three million, one hundred twenty-six thousand, thirty-six".