442040117 has 2 divisors, whose sum is σ = 442040118. Its totient is φ = 442040116.

The previous prime is 442040113. The next prime is 442040141. The reversal of 442040117 is 711040244.

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., 356680996 + 85359121 = 18886^2 + 9239^2 .

It is a cyclic number.

It is not a de Polignac number, because 442040117 - 2² = 442040113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442040092 and 442040101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442040113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221020058 + 221020059.

It is an arithmetic number, because the mean of its divisors is an integer number (221020059).

Almost surely, 2^442040117 is an apocalyptic number.

It is an amenable number.

442040117 is a deficient number, since it is larger than the sum of its proper divisors (1).

442040117 is an equidigital number, since it uses as much as digits as its factorization.

442040117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 442040117 is about 21024.7501055304. The cubic root of 442040117 is about 761.7642054418.

The spelling of 442040117 in words is "four hundred forty-two million, forty thousand, one hundred seventeen".