442857061 has 2 divisors, whose sum is σ = 442857062. Its totient is φ = 442857060.

The previous prime is 442857013. The next prime is 442857071. The reversal of 442857061 is 160758244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429940225 + 12916836 = 20735^2 + 3594^2 .

It is a cyclic number.

It is not a de Polignac number, because 442857061 - 2⁹ = 442856549 is a prime.

It is a super-2 number, since 2×442857061² = 392244752955115442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442857061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442857071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221428530 + 221428531.

It is an arithmetic number, because the mean of its divisors is an integer number (221428531).

Almost surely, 2^442857061 is an apocalyptic number.

It is an amenable number.

442857061 is a deficient number, since it is larger than the sum of its proper divisors (1).

442857061 is an equidigital number, since it uses as much as digits as its factorization.

442857061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 442857061 is about 21044.1692874772. The cubic root of 442857061 is about 762.2331943357.

The spelling of 442857061 in words is "four hundred forty-two million, eight hundred fifty-seven thousand, sixty-one".