42810939629 has 2 divisors, whose sum is σ = 42810939630. Its totient is φ = 42810939628.

The previous prime is 42810939617. The next prime is 42810939659. The reversal of 42810939629 is 92693901824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42695956900 + 114982729 = 206630^2 + 10723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42810939629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42810939659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21405469814 + 21405469815.

It is an arithmetic number, because the mean of its divisors is an integer number (21405469815).

Almost surely, 2^42810939629 is an apocalyptic number.

It is an amenable number.

42810939629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42810939629 is an equidigital number, since it uses as much as digits as its factorization.

42810939629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 42810939629 in words is "forty-two billion, eight hundred ten million, nine hundred thirty-nine thousand, six hundred twenty-nine".