42450217543 has 2 divisors, whose sum is σ = 42450217544. Its totient is φ = 42450217542.

The previous prime is 42450217501. The next prime is 42450217583. The reversal of 42450217543 is 34571205424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42450217543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42450217583) 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, 21225108771 + 21225108772.

It is an arithmetic number, because the mean of its divisors is an integer number (21225108772).

Almost surely, 2^42450217543 is an apocalyptic number.

42450217543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450217543 is an equidigital number, since it uses as much as digits as its factorization.

42450217543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 42450217543 in words is "forty-two billion, four hundred fifty million, two hundred seventeen thousand, five hundred forty-three".