42434545243 has 2 divisors, whose sum is σ = 42434545244. Its totient is φ = 42434545242.

The previous prime is 42434545229. The next prime is 42434545247. The reversal of 42434545243 is 34254543424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42434545243 - 2⁹ = 42434544731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42434545196 and 42434545205.

It is not a weakly prime, because it can be changed into another prime (42434545247) 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, 21217272621 + 21217272622.

It is an arithmetic number, because the mean of its divisors is an integer number (21217272622).

Almost surely, 2^42434545243 is an apocalyptic number.

42434545243 is a deficient number, since it is larger than the sum of its proper divisors (1).

42434545243 is an equidigital number, since it uses as much as digits as its factorization.

42434545243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 40.

The spelling of 42434545243 in words is "forty-two billion, four hundred thirty-four million, five hundred forty-five thousand, two hundred forty-three".