851120141 has 2 divisors, whose sum is σ = 851120142. Its totient is φ = 851120140.

The previous prime is 851120117. The next prime is 851120161. The reversal of 851120141 is 141021158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638572900 + 212547241 = 25270^2 + 14579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851120141 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851120111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425560070 + 425560071.

It is an arithmetic number, because the mean of its divisors is an integer number (425560071).

Almost surely, 2^851120141 is an apocalyptic number.

It is an amenable number.

851120141 is a deficient number, since it is larger than the sum of its proper divisors (1).

851120141 is an equidigital number, since it uses as much as digits as its factorization.

851120141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 851120141 is about 29173.9634091770. The cubic root of 851120141 is about 947.6841619829.

Adding to 851120141 its reverse (141021158), we get a palindrome (992141299).

The spelling of 851120141 in words is "eight hundred fifty-one million, one hundred twenty thousand, one hundred forty-one".