1240340135 has 8 divisors (see below), whose sum is σ = 1495888800. Its totient is φ = 987285024.

The previous prime is 1240340119. The next prime is 1240340147. The reversal of 1240340135 is 5310430421.

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 1240340135 - 2⁴ = 1240340119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240340135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622292 + ... + 624281.

It is an arithmetic number, because the mean of its divisors is an integer number (186986100).

Almost surely, 2^1240340135 is an apocalyptic number.

1240340135 is a deficient number, since it is larger than the sum of its proper divisors (255548665).

1240340135 is a wasteful number, since it uses less digits than its factorization.

1240340135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246777.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1240340135 is about 35218.4629846335. The cubic root of 1240340135 is about 1074.4352930946.

Adding to 1240340135 its reverse (5310430421), we get a palindrome (6550770556).

The spelling of 1240340135 in words is "one billion, two hundred forty million, three hundred forty thousand, one hundred thirty-five".