442013441 has 2 divisors, whose sum is σ = 442013442. Its totient is φ = 442013440.

The previous prime is 442013393. The next prime is 442013489. The reversal of 442013441 is 144310244.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (442013393) and next prime (442013489).

It can be written as a sum of positive squares in only one way, i.e., 336355600 + 105657841 = 18340^2 + 10279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442013441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442013491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221006720 + 221006721.

It is an arithmetic number, because the mean of its divisors is an integer number (221006721).

Almost surely, 2^442013441 is an apocalyptic number.

It is an amenable number.

442013441 is a deficient number, since it is larger than the sum of its proper divisors (1).

442013441 is an equidigital number, since it uses as much as digits as its factorization.

442013441 is an evil number, because the sum of its binary digits is even.

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

The square root of 442013441 is about 21024.1157007851. The cubic root of 442013441 is about 761.7488816209.

Adding to 442013441 its reverse (144310244), we get a palindrome (586323685).

The spelling of 442013441 in words is "four hundred forty-two million, thirteen thousand, four hundred forty-one".