42220343447 has 2 divisors, whose sum is σ = 42220343448. Its totient is φ = 42220343446.

The previous prime is 42220343383. The next prime is 42220343491. The reversal of 42220343447 is 74434302224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42220343447 - 2⁶ = 42220343383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42220343747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21110171723 + 21110171724.

It is an arithmetic number, because the mean of its divisors is an integer number (21110171724).

Almost surely, 2^42220343447 is an apocalyptic number.

42220343447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42220343447 is an equidigital number, since it uses as much as digits as its factorization.

42220343447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 35.

The spelling of 42220343447 in words is "forty-two billion, two hundred twenty million, three hundred forty-three thousand, four hundred forty-seven".