1240243430343 has 8 divisors (see below), whose sum is σ = 1657053510528. Its totient is φ = 825131151864.

The previous prime is 1240243430341. The next prime is 1240243430347. The reversal of 1240243430343 is 3430343420421.

It is a happy number.

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

It is not a de Polignac number, because 1240243430343 - 2¹ = 1240243430341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240243430341) by changing a digit.

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, 424448721 + ... + 424451642.

It is an arithmetic number, because the mean of its divisors is an integer number (207131688816).

Almost surely, 2^{1240243430343} is an apocalyptic number.

1240243430343 is a deficient number, since it is larger than the sum of its proper divisors (416810080185).

1240243430343 is an equidigital number, since it uses as much as digits as its factorization.

1240243430343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848900853.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 1240243430343 its reverse (3430343420421), we get a palindrome (4670586850764).

The spelling of 1240243430343 in words is "one trillion, two hundred forty billion, two hundred forty-three million, four hundred thirty thousand, three hundred forty-three".