1240121302343 has 48 divisors (see below), whose sum is σ = 1590412084800. Its totient is φ = 965853504000.

The previous prime is 1240121302297. The next prime is 1240121302369. The reversal of 1240121302343 is 3432031210421.

It is not a de Polignac number, because 1240121302343 - 2¹⁰ = 1240121301319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240121304343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101302703 + ... + 101314943.

It is an arithmetic number, because the mean of its divisors is an integer number (33133585100).

Almost surely, 2^{1240121302343} is an apocalyptic number.

1240121302343 is a deficient number, since it is larger than the sum of its proper divisors (350290782457).

1240121302343 is a wasteful number, since it uses less digits than its factorization.

1240121302343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14725 (or 14700 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1240121302343 its reverse (3432031210421), we get a palindrome (4672152512764).

The spelling of 1240121302343 in words is "one trillion, two hundred forty billion, one hundred twenty-one million, three hundred two thousand, three hundred forty-three".