1340252671 has 2 divisors, whose sum is σ = 1340252672. Its totient is φ = 1340252670.

The previous prime is 1340252651. The next prime is 1340252677. The reversal of 1340252671 is 1762520431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340252671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340252677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670126335 + 670126336.

It is an arithmetic number, because the mean of its divisors is an integer number (670126336).

Almost surely, 2^1340252671 is an apocalyptic number.

1340252671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340252671 is an equidigital number, since it uses as much as digits as its factorization.

1340252671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1340252671 is about 36609.4614956298. The cubic root of 1340252671 is about 1102.5430614108.

The spelling of 1340252671 in words is "one billion, three hundred forty million, two hundred fifty-two thousand, six hundred seventy-one".