42815808029 has 2 divisors, whose sum is σ = 42815808030. Its totient is φ = 42815808028.

The previous prime is 42815807989. The next prime is 42815808097. The reversal of 42815808029 is 92080851824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38208520900 + 4607287129 = 195470^2 + 67877^2 .

It is a cyclic number.

It is not a de Polignac number, because 42815808029 - 2²⁰ = 42814759453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42815807029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21407904014 + 21407904015.

It is an arithmetic number, because the mean of its divisors is an integer number (21407904015).

Almost surely, 2^42815808029 is an apocalyptic number.

It is an amenable number.

42815808029 is a deficient number, since it is larger than the sum of its proper divisors (1).

42815808029 is an equidigital number, since it uses as much as digits as its factorization.

42815808029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 42815808029 in words is "forty-two billion, eight hundred fifteen million, eight hundred eight thousand, twenty-nine".