442040141 has 2 divisors, whose sum is σ = 442040142. Its totient is φ = 442040140.

The previous prime is 442040117. The next prime is 442040153. The reversal of 442040141 is 141040244.

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., 345588100 + 96452041 = 18590^2 + 9821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442040141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442040101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221020070 + 221020071.

It is an arithmetic number, because the mean of its divisors is an integer number (221020071).

Almost surely, 2^442040141 is an apocalyptic number.

It is an amenable number.

442040141 is a deficient number, since it is larger than the sum of its proper divisors (1).

442040141 is an equidigital number, since it uses as much as digits as its factorization.

442040141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 442040141 is about 21024.7506762863. The cubic root of 442040141 is about 761.7642192281.

Adding to 442040141 its reverse (141040244), we get a palindrome (583080385).

The spelling of 442040141 in words is "four hundred forty-two million, forty thousand, one hundred forty-one".