1342001681 has 2 divisors, whose sum is σ = 1342001682. Its totient is φ = 1342001680.

The previous prime is 1342001659. The next prime is 1342001797. The reversal of 1342001681 is 1861002431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220803600 + 121198081 = 34940^2 + 11009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342001681 is a prime.

It is a super-2 number, since 2×1342001681² = 3601937023613651522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1342001681.

It is not a weakly prime, because it can be changed into another prime (1342001621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671000840 + 671000841.

It is an arithmetic number, because the mean of its divisors is an integer number (671000841).

Almost surely, 2^1342001681 is an apocalyptic number.

It is an amenable number.

1342001681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342001681 is an equidigital number, since it uses as much as digits as its factorization.

1342001681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1342001681 is about 36633.3411116158. The cubic root of 1342001681 is about 1103.0224537579.

The spelling of 1342001681 in words is "one billion, three hundred forty-two million, one thousand, six hundred eighty-one".