42555055547 has 2 divisors, whose sum is σ = 42555055548. Its totient is φ = 42555055546.

The previous prime is 42555055519. The next prime is 42555055577. The reversal of 42555055547 is 74555055524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42555055547 - 2¹⁰ = 42555054523 is a prime.

It is not a weakly prime, because it can be changed into another prime (42555055507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277527773 + 21277527774.

It is an arithmetic number, because the mean of its divisors is an integer number (21277527774).

Almost surely, 2^42555055547 is an apocalyptic number.

42555055547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42555055547 is an equidigital number, since it uses as much as digits as its factorization.

42555055547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3500000, while the sum is 47.

The spelling of 42555055547 in words is "forty-two billion, five hundred fifty-five million, fifty-five thousand, five hundred forty-seven".