1263135 has 16 divisors (see below), whose sum is σ = 2042496. Its totient is φ = 666528.

The previous prime is 1263133. The next prime is 1263173. The reversal of 1263135 is 5313621.

It is not a de Polignac number, because 1263135 - 2¹ = 1263133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (127656).

2^1263135 is an apocalyptic number.

1263135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1263135 is a deficient number, since it is larger than the sum of its proper divisors (779361).

1263135 is a wasteful number, since it uses less digits than its factorization.

1263135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its digits is 540, while the sum is 21.

The square root of 1263135 is about 1123.8927884812. The cubic root of 1263135 is about 108.0977338891.

Adding to 1263135 its reverse (5313621), we get a palindrome (6576756).

The spelling of 1263135 in words is "one million, two hundred sixty-three thousand, one hundred thirty-five".