1240342443135 has 32 divisors (see below), whose sum is σ = 2206257960960. Its totient is φ = 661154551200.

The previous prime is 1240342443113. The next prime is 1240342443169. The reversal of 1240342443135 is 5313442430421.

1240342443135 is a `hidden beast` number, since 1 + 2 + 40 + 3 + 42 + 443 + 135 = 666.

It is not a de Polignac number, because 1240342443135 - 2²⁶ = 1240275334271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240342443135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2261751 + ... + 2756120.

It is an arithmetic number, because the mean of its divisors is an integer number (68945561280).

Almost surely, 2^{1240342443135} is an apocalyptic number.

1240342443135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1240342443135 is a deficient number, since it is larger than the sum of its proper divisors (965915517825).

1240342443135 is a wasteful number, since it uses less digits than its factorization.

1240342443135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019716 (or 5019710 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 1240342443135 its reverse (5313442430421), we get a palindrome (6553784873556).

The spelling of 1240342443135 in words is "one trillion, two hundred forty billion, three hundred forty-two million, four hundred forty-three thousand, one hundred thirty-five".