42242220424447 has 2 divisors, whose sum is σ = 42242220424448. Its totient is φ = 42242220424446.

The previous prime is 42242220424381. The next prime is 42242220424501. The reversal of 42242220424447 is 74442402224224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42242220424447 - 2¹¹ = 42242220422399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242223424447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121110212223 + 21121110212224.

It is an arithmetic number, because the mean of its divisors is an integer number (21121110212224).

Almost surely, 2^{42242220424447} is an apocalyptic number.

42242220424447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242220424447 is an equidigital number, since it uses as much as digits as its factorization.

42242220424447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1835008, while the sum is 43.

The spelling of 42242220424447 in words is "forty-two trillion, two hundred forty-two billion, two hundred twenty million, four hundred twenty-four thousand, four hundred forty-seven".