442031441 has 2 divisors, whose sum is σ = 442031442. Its totient is φ = 442031440.

The previous prime is 442031431. The next prime is 442031461. The reversal of 442031441 is 144130244.

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., 247149841 + 194881600 = 15721^2 + 13960^2 .

It is a cyclic number.

It is not a de Polignac number, because 442031441 - 2¹⁸ = 441769297 is a prime.

It is not a weakly prime, because it can be changed into another prime (442031431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221015720 + 221015721.

It is an arithmetic number, because the mean of its divisors is an integer number (221015721).

Almost surely, 2^442031441 is an apocalyptic number.

It is an amenable number.

442031441 is a deficient number, since it is larger than the sum of its proper divisors (1).

442031441 is an equidigital number, since it uses as much as digits as its factorization.

442031441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 442031441 is about 21024.5437762630. The cubic root of 442031441 is about 761.7592216487.

Adding to 442031441 its reverse (144130244), we get a palindrome (586161685).

The spelling of 442031441 in words is "four hundred forty-two million, thirty-one thousand, four hundred forty-one".