442414121 has 2 divisors, whose sum is σ = 442414122. Its totient is φ = 442414120.

The previous prime is 442414087. The next prime is 442414201. The reversal of 442414121 is 121414244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323604121 + 118810000 = 17989^2 + 10900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442414121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442411121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221207060 + 221207061.

It is an arithmetic number, because the mean of its divisors is an integer number (221207061).

Almost surely, 2^442414121 is an apocalyptic number.

It is an amenable number.

442414121 is a deficient number, since it is larger than the sum of its proper divisors (1).

442414121 is an equidigital number, since it uses as much as digits as its factorization.

442414121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 23.

The square root of 442414121 is about 21033.6425994168. The cubic root of 442414121 is about 761.9789842487.

Adding to 442414121 its reverse (121414244), we get a palindrome (563828365).

The spelling of 442414121 in words is "four hundred forty-two million, four hundred fourteen thousand, one hundred twenty-one".