442381741 has 2 divisors, whose sum is σ = 442381742. Its totient is φ = 442381740.

The previous prime is 442381739. The next prime is 442381777. The reversal of 442381741 is 147183244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289340100 + 153041641 = 17010^2 + 12371^2 .

It is a cyclic number.

It is not a de Polignac number, because 442381741 - 2¹ = 442381739 is a prime.

Together with 442381739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 442381697 and 442381706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442381141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221190870 + 221190871.

It is an arithmetic number, because the mean of its divisors is an integer number (221190871).

Almost surely, 2^442381741 is an apocalyptic number.

It is an amenable number.

442381741 is a deficient number, since it is larger than the sum of its proper divisors (1).

442381741 is an equidigital number, since it uses as much as digits as its factorization.

442381741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 34.

The square root of 442381741 is about 21032.8728660637. The cubic root of 442381741 is about 761.9603942141.

The spelling of 442381741 in words is "four hundred forty-two million, three hundred eighty-one thousand, seven hundred forty-one".