42421244039 has 2 divisors, whose sum is σ = 42421244040. Its totient is φ = 42421244038.

The previous prime is 42421244023. The next prime is 42421244069. The reversal of 42421244039 is 93044212424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42421244039 - 2⁴ = 42421244023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42421244069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210622019 + 21210622020.

It is an arithmetic number, because the mean of its divisors is an integer number (21210622020).

Almost surely, 2^42421244039 is an apocalyptic number.

42421244039 is a deficient number, since it is larger than the sum of its proper divisors (1).

42421244039 is an equidigital number, since it uses as much as digits as its factorization.

42421244039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 42421244039 in words is "forty-two billion, four hundred twenty-one million, two hundred forty-four thousand, thirty-nine".