442681033 has 2 divisors, whose sum is σ = 442681034. Its totient is φ = 442681032.

The previous prime is 442681021. The next prime is 442681039. The reversal of 442681033 is 330186244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322274304 + 120406729 = 17952^2 + 10973^2 .

It is a cyclic number.

It is not a de Polignac number, because 442681033 - 2⁹ = 442680521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442680986 and 442681004.

It is not a weakly prime, because it can be changed into another prime (442681039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221340516 + 221340517.

It is an arithmetic number, because the mean of its divisors is an integer number (221340517).

Almost surely, 2^442681033 is an apocalyptic number.

It is an amenable number.

442681033 is a deficient number, since it is larger than the sum of its proper divisors (1).

442681033 is an equidigital number, since it uses as much as digits as its factorization.

442681033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 442681033 is about 21039.9865256611. The cubic root of 442681033 is about 762.1321894609.

The spelling of 442681033 in words is "four hundred forty-two million, six hundred eighty-one thousand, thirty-three".