1340422442545 has 4 divisors (see below), whose sum is σ = 1608506931060. Its totient is φ = 1072337954032.

The previous prime is 1340422442537. The next prime is 1340422442551. The reversal of 1340422442545 is 5452442240431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 590450854464 + 749971588081 = 768408^2 + 866009^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340422442545 - 2³ = 1340422442537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340422442498 and 1340422442507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134042244250 + ... + 134042244259.

It is an arithmetic number, because the mean of its divisors is an integer number (402126732765).

Almost surely, 2^{1340422442545} is an apocalyptic number.

It is an amenable number.

1340422442545 is a deficient number, since it is larger than the sum of its proper divisors (268084488515).

1340422442545 is an equidigital number, since it uses as much as digits as its factorization.

1340422442545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268084488514.

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 1340422442545 its reverse (5452442240431), we get a palindrome (6792864682976).

The spelling of 1340422442545 in words is "one trillion, three hundred forty billion, four hundred twenty-two million, four hundred forty-two thousand, five hundred forty-five".