1263200106 has 96 divisors (see below), whose sum is σ = 3031706880. Its totient is φ = 349676544.

The previous prime is 1263200087. The next prime is 1263200129. The reversal of 1263200106 is 6010023621.

It is a happy number.

It is a super-2 number, since 2×1263200106² = 3191349015596822472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

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 47 ways as a sum of consecutive naturals, for example, 1561030 + ... + 1561838.

It is an arithmetic number, because the mean of its divisors is an integer number (31580280).

Almost surely, 2^1263200106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263200106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515853440).

1263200106 is an abundant number, since it is smaller than the sum of its proper divisors (1768506774).

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

1263200106 is a wasteful number, since it uses less digits than its factorization.

1263200106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1263200106 is about 35541.5265007006. The cubic root of 1263200106 is about 1080.9959109097.

Adding to 1263200106 its reverse (6010023621), we get a palindrome (7273223727).

The spelling of 1263200106 in words is "one billion, two hundred sixty-three million, two hundred thousand, one hundred six".