1340454505 has 16 divisors (see below), whose sum is σ = 1834179984. Its totient is φ = 931645440.

The previous prime is 1340454499. The next prime is 1340454529. The reversal of 1340454505 is 5054540431.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12362256 + 1328092249 = 3516^2 + 36443^2 .

It is not a de Polignac number, because 1340454505 - 2³ = 1340454497 is a prime.

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, 605436 + ... + 607645.

It is an arithmetic number, because the mean of its divisors is an integer number (114636249).

Almost surely, 2^1340454505 is an apocalyptic number.

It is an amenable number.

1340454505 is a deficient number, since it is larger than the sum of its proper divisors (493725479).

1340454505 is a wasteful number, since it uses less digits than its factorization.

1340454505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213116.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 1340454505 is about 36612.2179743320. The cubic root of 1340454505 is about 1102.5984040865.

Adding to 1340454505 its reverse (5054540431), we get a palindrome (6394994936).

The spelling of 1340454505 in words is "one billion, three hundred forty million, four hundred fifty-four thousand, five hundred five".