1296135 has 16 divisors (see below), whose sum is σ = 2304480. Its totient is φ = 691200.

The previous prime is 1296109. The next prime is 1296137. The reversal of 1296135 is 5316921.

It is not a de Polignac number, because 1296135 - 2⁷ = 1296007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

1296135 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1296099 and 1296108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296137) 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, 4666 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (144030).

2^1296135 is an apocalyptic number.

1296135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1296135 is a deficient number, since it is larger than the sum of its proper divisors (1008345).

1296135 is an equidigital number, since it uses as much as digits as its factorization.

1296135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9615 (or 9609 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1296135 is about 1138.4792488227. The cubic root of 1296135 is about 109.0310211064.

It can be divided in two parts, 12961 and 35, that added together give a square (12996 = 114²).

The spelling of 1296135 in words is "one million, two hundred ninety-six thousand, one hundred thirty-five".