442123728382189 has 32 divisors (see below), whose sum is σ = 515770651590656. Its totient is φ = 371179645741440.

The previous prime is 442123728382187. The next prime is 442123728382223. The reversal of 442123728382189 is 981283827321244.

It is a cyclic number.

It is not a de Polignac number, because 442123728382189 - 2¹ = 442123728382187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442123728382189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442123728382181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37313884 + ... + 47713450.

It is an arithmetic number, because the mean of its divisors is an integer number (16117832862208).

Almost surely, 2^{442123728382189} is an apocalyptic number.

It is an amenable number.

442123728382189 is a deficient number, since it is larger than the sum of its proper divisors (73646923208467).

442123728382189 is a wasteful number, since it uses less digits than its factorization.

442123728382189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10400225.

The product of its digits is 74317824, while the sum is 64.

The spelling of 442123728382189 in words is "four hundred forty-two trillion, one hundred twenty-three billion, seven hundred twenty-eight million, three hundred eighty-two thousand, one hundred eighty-nine".