42455056547 has 2 divisors, whose sum is σ = 42455056548. Its totient is φ = 42455056546.

The previous prime is 42455056517. The next prime is 42455056583. The reversal of 42455056547 is 74565055424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42455056547 - 2¹⁰ = 42455055523 is a prime.

It is not a weakly prime, because it can be changed into another prime (42455056507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21227528273 + 21227528274.

It is an arithmetic number, because the mean of its divisors is an integer number (21227528274).

Almost surely, 2^42455056547 is an apocalyptic number.

42455056547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42455056547 is an equidigital number, since it uses as much as digits as its factorization.

42455056547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360000, while the sum is 47.

The spelling of 42455056547 in words is "forty-two billion, four hundred fifty-five million, fifty-six thousand, five hundred forty-seven".