1340440241434 has 32 divisors (see below), whose sum is σ = 2343779717760. Its totient is φ = 563061639168.

The previous prime is 1340440241333. The next prime is 1340440241461. The reversal of 1340440241434 is 4341420440431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340440241434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2129367 + ... + 2686090.

It is an arithmetic number, because the mean of its divisors is an integer number (73243116180).

Almost surely, 2^{1340440241434} is an apocalyptic number.

1340440241434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1340440241434 is a deficient number, since it is larger than the sum of its proper divisors (1003339476326).

1340440241434 is a wasteful number, since it uses less digits than its factorization.

1340440241434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815862.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 1340440241434 its reverse (4341420440431), we get a palindrome (5681860681865).

The spelling of 1340440241434 in words is "one trillion, three hundred forty billion, four hundred forty million, two hundred forty-one thousand, four hundred thirty-four".