20200142161 has 2 divisors, whose sum is σ = 20200142162. Its totient is φ = 20200142160.

The previous prime is 20200142147. The next prime is 20200142167. The reversal of 20200142161 is 16124100202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20198094400 + 2047761 = 142120^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200142161 - 2¹⁹ = 20199617873 is a prime.

It is not a weakly prime, because it can be changed into another prime (20200142167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100071080 + 10100071081.

It is an arithmetic number, because the mean of its divisors is an integer number (10100071081).

Almost surely, 2^20200142161 is an apocalyptic number.

It is an amenable number.

20200142161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200142161 is an equidigital number, since it uses as much as digits as its factorization.

20200142161 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 19.

Adding to 20200142161 its reverse (16124100202), we get a palindrome (36324242363).

The spelling of 20200142161 in words is "twenty billion, two hundred million, one hundred forty-two thousand, one hundred sixty-one".