1340026427 has 2 divisors, whose sum is σ = 1340026428. Its totient is φ = 1340026426.

The previous prime is 1340026409. The next prime is 1340026481. The reversal of 1340026427 is 7246200431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340026427 - 2¹⁰ = 1340025403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340026427.

It is not a weakly prime, because it can be changed into another prime (1340026487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670013213 + 670013214.

It is an arithmetic number, because the mean of its divisors is an integer number (670013214).

Almost surely, 2^1340026427 is an apocalyptic number.

1340026427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340026427 is an equidigital number, since it uses as much as digits as its factorization.

1340026427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 1340026427 is about 36606.3713989792. The cubic root of 1340026427 is about 1102.4810189330.

Adding to 1340026427 its reverse (7246200431), we get a palindrome (8586226858).

The spelling of 1340026427 in words is "one billion, three hundred forty million, twenty-six thousand, four hundred twenty-seven".