1263105 has 12 divisors (see below), whose sum is σ = 2189460. Its totient is φ = 673632.

The previous prime is 1263103. The next prime is 1263107. The reversal of 1263105 is 5013621.

It is an interprime number because it is at equal distance from previous prime (1263103) and next prime (1263107).

It can be written as a sum of positive squares in 2 ways, for example, as 294849 + 968256 = 543^2 + 984^2 .

It is not a de Polignac number, because 1263105 - 2¹ = 1263103 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1263103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13990 + ... + 14079.

It is an arithmetic number, because the mean of its divisors is an integer number (182455).

2^1263105 is an apocalyptic number.

1263105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1263105 is a deficient number, since it is larger than the sum of its proper divisors (926355).

1263105 is a wasteful number, since it uses less digits than its factorization.

1263105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28080 (or 28077 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1263105 is about 1123.8794419332. The cubic root of 1263105 is about 108.0968780931.

Adding to 1263105 its reverse (5013621), we get a palindrome (6276726).

The spelling of 1263105 in words is "one million, two hundred sixty-three thousand, one hundred five".