42497856473 has 2 divisors, whose sum is σ = 42497856474. Its totient is φ = 42497856472.

The previous prime is 42497856421. The next prime is 42497856481. The reversal of 42497856473 is 37465879424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28727538064 + 13770318409 = 169492^2 + 117347^2 .

It is a cyclic number.

It is not a de Polignac number, because 42497856473 - 2¹² = 42497852377 is a prime.

It is not a weakly prime, because it can be changed into another prime (42497852473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21248928236 + 21248928237.

It is an arithmetic number, because the mean of its divisors is an integer number (21248928237).

Almost surely, 2^42497856473 is an apocalyptic number.

It is an amenable number.

42497856473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42497856473 is an equidigital number, since it uses as much as digits as its factorization.

42497856473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 59.

The spelling of 42497856473 in words is "forty-two billion, four hundred ninety-seven million, eight hundred fifty-six thousand, four hundred seventy-three".