42729681703 has 2 divisors, whose sum is σ = 42729681704. Its totient is φ = 42729681702.

The previous prime is 42729681667. The next prime is 42729681791. The reversal of 42729681703 is 30718692724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42729681703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42729681793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21364840851 + 21364840852.

It is an arithmetic number, because the mean of its divisors is an integer number (21364840852).

Almost surely, 2^42729681703 is an apocalyptic number.

42729681703 is a deficient number, since it is larger than the sum of its proper divisors (1).

42729681703 is an equidigital number, since it uses as much as digits as its factorization.

42729681703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 42729681703 in words is "forty-two billion, seven hundred twenty-nine million, six hundred eighty-one thousand, seven hundred three".