1340480642 has 6 divisors (see below), whose sum is σ = 2010798633. Its totient is φ = 670214432.

The previous prime is 1340480629. The next prime is 1340480663. The reversal of 1340480642 is 2460840431.

It can be written as a sum of positive squares in 2 ways, for example, as 945624001 + 394856641 = 30751^2 + 19871^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25889.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340480599 and 1340480608.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 38834 + ... + 64722.

Almost surely, 2^1340480642 is an apocalyptic number.

1340480642 is a deficient number, since it is larger than the sum of its proper divisors (670317991).

1340480642 is an frugal number, since it uses more digits than its factorization.

1340480642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51780 (or 25891 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1340480642 is about 36612.5749162771. The cubic root of 1340480642 is about 1102.6055704187.

Multiplying 1340480642 by its sum of digits (32), we get a square (42895380544 = 207112²).

Multiplying 1340480642 by its product of nonzero digits (18432), we get a square (24707739193344 = 4970688²).

The spelling of 1340480642 in words is "one billion, three hundred forty million, four hundred eighty thousand, six hundred forty-two".