1340260407 has 12 divisors (see below), whose sum is σ = 1936351144. Its totient is φ = 893313360.

The previous prime is 1340260391. The next prime is 1340260477. The reversal of 1340260407 is 7040620431.

1340260407 is a `hidden beast` number, since 13 + 40 + 2 + 604 + 0 + 7 = 666.

It is not a de Polignac number, because 1340260407 - 2⁴ = 1340260391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340260477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36888 + ... + 63570.

Almost surely, 2^1340260407 is an apocalyptic number.

1340260407 is a deficient number, since it is larger than the sum of its proper divisors (596090737).

1340260407 is a wasteful number, since it uses less digits than its factorization.

1340260407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32270 (or 32267 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1340260407 is about 36609.5671512243. The cubic root of 1340260407 is about 1102.5451827165.

Adding to 1340260407 its reverse (7040620431), we get a palindrome (8380880838).

The spelling of 1340260407 in words is "one billion, three hundred forty million, two hundred sixty thousand, four hundred seven".