1340420420422 has 16 divisors (see below), whose sum is σ = 2098088467200. Its totient is φ = 641058684552.

The previous prime is 1340420420413. The next prime is 1340420420429. The reversal of 1340420420422 is 2240240240431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340420420429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2534329 + ... + 3017227.

It is an arithmetic number, because the mean of its divisors is an integer number (131130529200).

Almost surely, 2^{1340420420422} is an apocalyptic number.

1340420420422 is a deficient number, since it is larger than the sum of its proper divisors (757668046778).

1340420420422 is a wasteful number, since it uses less digits than its factorization.

1340420420422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543267.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1340420420422 its reverse (2240240240431), we get a palindrome (3580660660853).

The spelling of 1340420420422 in words is "one trillion, three hundred forty billion, four hundred twenty million, four hundred twenty thousand, four hundred twenty-two".