320042141 has 2 divisors, whose sum is σ = 320042142. Its totient is φ = 320042140.

The previous prime is 320042123. The next prime is 320042167. The reversal of 320042141 is 141240023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194714116 + 125328025 = 13954^2 + 11195^2 .

It is an emirp because it is prime and its reverse (141240023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320042141 - 2²² = 315847837 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 (320042101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160021070 + 160021071.

It is an arithmetic number, because the mean of its divisors is an integer number (160021071).

Almost surely, 2^320042141 is an apocalyptic number.

It is an amenable number.

320042141 is a deficient number, since it is larger than the sum of its proper divisors (1).

320042141 is an equidigital number, since it uses as much as digits as its factorization.

320042141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 320042141 is about 17889.7216579800. The cubic root of 320042141 is about 684.0204023929.

Adding to 320042141 its reverse (141240023), we get a palindrome (461282164).

The spelling of 320042141 in words is "three hundred twenty million, forty-two thousand, one hundred forty-one".