442440241 has 2 divisors, whose sum is σ = 442440242. Its totient is φ = 442440240.

The previous prime is 442440221. The next prime is 442440301. The reversal of 442440241 is 142044244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240374016 + 202066225 = 15504^2 + 14215^2 .

It is a cyclic number.

It is not a de Polignac number, because 442440241 - 2⁵ = 442440209 is a prime.

It is a super-2 number, since 2×442440241² = 391506733712276162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442440221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221220120 + 221220121.

It is an arithmetic number, because the mean of its divisors is an integer number (221220121).

Almost surely, 2^442440241 is an apocalyptic number.

It is an amenable number.

442440241 is a deficient number, since it is larger than the sum of its proper divisors (1).

442440241 is an equidigital number, since it uses as much as digits as its factorization.

442440241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 442440241 is about 21034.2635002987. The cubic root of 442440241 is about 761.9939796256.

Adding to 442440241 its reverse (142044244), we get a palindrome (584484485).

The spelling of 442440241 in words is "four hundred forty-two million, four hundred forty thousand, two hundred forty-one".