442340141 has 2 divisors, whose sum is σ = 442340142. Its totient is φ = 442340140.

The previous prime is 442340089. The next prime is 442340149. The reversal of 442340141 is 141043244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419020900 + 23319241 = 20470^2 + 4829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442340141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442340149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221170070 + 221170071.

It is an arithmetic number, because the mean of its divisors is an integer number (221170071).

Almost surely, 2^442340141 is an apocalyptic number.

It is an amenable number.

442340141 is a deficient number, since it is larger than the sum of its proper divisors (1).

442340141 is an equidigital number, since it uses as much as digits as its factorization.

442340141 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 442340141 is about 21031.8839146663. The cubic root of 442340141 is about 761.9365094535.

Adding to 442340141 its reverse (141043244), we get a palindrome (583383385).

The spelling of 442340141 in words is "four hundred forty-two million, three hundred forty thousand, one hundred forty-one".