42421320199 has 2 divisors, whose sum is σ = 42421320200. Its totient is φ = 42421320198.

The previous prime is 42421320187. The next prime is 42421320217. The reversal of 42421320199 is 99102312424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42421320199 - 2⁵ = 42421320167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42421320299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210660099 + 21210660100.

It is an arithmetic number, because the mean of its divisors is an integer number (21210660100).

Almost surely, 2^42421320199 is an apocalyptic number.

42421320199 is a deficient number, since it is larger than the sum of its proper divisors (1).

42421320199 is an equidigital number, since it uses as much as digits as its factorization.

42421320199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 42421320199 in words is "forty-two billion, four hundred twenty-one million, three hundred twenty thousand, one hundred ninety-nine".