1340635141 has 2 divisors, whose sum is σ = 1340635142. Its totient is φ = 1340635140.

The previous prime is 1340635139. The next prime is 1340635183. The reversal of 1340635141 is 1415360431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067394241 + 273240900 = 32671^2 + 16530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340635141 - 2¹ = 1340635139 is a prime.

Together with 1340635139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340635741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670317570 + 670317571.

It is an arithmetic number, because the mean of its divisors is an integer number (670317571).

Almost surely, 2^1340635141 is an apocalyptic number.

It is an amenable number.

1340635141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340635141 is an equidigital number, since it uses as much as digits as its factorization.

1340635141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1340635141 is about 36614.6847726428. The cubic root of 1340635141 is about 1102.6479295817.

Adding to 1340635141 its reverse (1415360431), we get a palindrome (2755995572).

The spelling of 1340635141 in words is "one billion, three hundred forty million, six hundred thirty-five thousand, one hundred forty-one".