442040113 has 2 divisors, whose sum is σ = 442040114. Its totient is φ = 442040112.

The previous prime is 442040101. The next prime is 442040117. The reversal of 442040113 is 311040244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337530384 + 104509729 = 18372^2 + 10223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442040113 is a prime.

It is not a weakly prime, because it can be changed into another prime (442040117) 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, 221020056 + 221020057.

It is an arithmetic number, because the mean of its divisors is an integer number (221020057).

Almost surely, 2^442040113 is an apocalyptic number.

It is an amenable number.

442040113 is a deficient number, since it is larger than the sum of its proper divisors (1).

442040113 is an equidigital number, since it uses as much as digits as its factorization.

442040113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 442040113 is about 21024.7500104044. The cubic root of 442040113 is about 761.7642031441.

Adding to 442040113 its reverse (311040244), we get a palindrome (753080357).

The spelling of 442040113 in words is "four hundred forty-two million, forty thousand, one hundred thirteen".