42444442422439 has 4 divisors (see below), whose sum is σ = 42444498110256. Its totient is φ = 42444386734624.

The previous prime is 42444442422409. The next prime is 42444442422449. The reversal of 42444442422439 is 93422424444424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42444442422439 - 2⁴³ = 33648349400231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444442422409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26684539 + ... + 28230364.

It is an arithmetic number, because the mean of its divisors is an integer number (10611124527564).

Almost surely, 2^{42444442422439} is an apocalyptic number.

42444442422439 is a deficient number, since it is larger than the sum of its proper divisors (55687817).

42444442422439 is an equidigital number, since it uses as much as digits as its factorization.

42444442422439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55687816.

The product of its digits is 28311552, while the sum is 52.

The spelling of 42444442422439 in words is "forty-two trillion, four hundred forty-four billion, four hundred forty-two million, four hundred twenty-two thousand, four hundred thirty-nine".