1263142306 has 32 divisors (see below), whose sum is σ = 2083737600. Its totient is φ = 572009040.

The previous prime is 1263142289. The next prime is 1263142333. The reversal of 1263142306 is 6032413621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91315 + ... + 104233.

It is an arithmetic number, because the mean of its divisors is an integer number (65116800).

Almost surely, 2^1263142306 is an apocalyptic number.

1263142306 is a deficient number, since it is larger than the sum of its proper divisors (820595294).

1263142306 is a wasteful number, since it uses less digits than its factorization.

1263142306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13054.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1263142306 is about 35540.7133580630. The cubic root of 1263142306 is about 1080.9794230188.

Adding to 1263142306 its reverse (6032413621), we get a palindrome (7295555927).

It can be divided in two parts, 12631 and 42306, that multiplied together give a triangular number (534367086 = T₃₂₆₉₁).

The spelling of 1263142306 in words is "one billion, two hundred sixty-three million, one hundred forty-two thousand, three hundred six".