1240135 has 8 divisors (see below), whose sum is σ = 1602720. Its totient is φ = 915744.

The previous prime is 1240117. The next prime is 1240139. The reversal of 1240135 is 5310421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240135 - 2⁷ = 1240007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240139) 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 7 ways as a sum of consecutive naturals, for example, 9475 + ... + 9604.

It is an arithmetic number, because the mean of its divisors is an integer number (200340).

2^1240135 is an apocalyptic number.

1240135 is a deficient number, since it is larger than the sum of its proper divisors (362585).

1240135 is a wasteful number, since it uses less digits than its factorization.

1240135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19097.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1240135 is about 1113.6134877057. The cubic root of 1240135 is about 107.4376057613.

Adding to 1240135 its reverse (5310421), we get a palindrome (6550556).

The spelling of 1240135 in words is "one million, two hundred forty thousand, one hundred thirty-five".