42049479013 has 2 divisors, whose sum is σ = 42049479014. Its totient is φ = 42049479012.

The previous prime is 42049478953. The next prime is 42049479029. The reversal of 42049479013 is 31097494024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27714924484 + 14334554529 = 166478^2 + 119727^2 .

It is a cyclic number.

It is not a de Polignac number, because 42049479013 - 2⁹ = 42049478501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42049470013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21024739506 + 21024739507.

It is an arithmetic number, because the mean of its divisors is an integer number (21024739507).

Almost surely, 2^42049479013 is an apocalyptic number.

It is an amenable number.

42049479013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42049479013 is an equidigital number, since it uses as much as digits as its factorization.

42049479013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 42049479013 in words is "forty-two billion, forty-nine million, four hundred seventy-nine thousand, thirteen".