7142994161 has 2 divisors, whose sum is σ = 7142994162. Its totient is φ = 7142994160.

The previous prime is 7142994143. The next prime is 7142994167. The reversal of 7142994161 is 1614992417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4284487936 + 2858506225 = 65456^2 + 53465^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142994161 - 2⁶ = 7142994097 is a prime.

It is not a weakly prime, because it can be changed into another prime (7142994167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571497080 + 3571497081.

It is an arithmetic number, because the mean of its divisors is an integer number (3571497081).

Almost surely, 2^7142994161 is an apocalyptic number.

It is an amenable number.

7142994161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142994161 is an equidigital number, since it uses as much as digits as its factorization.

7142994161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 7142994161 is about 84516.2360792292. The cubic root of 7142994161 is about 1925.8690997504.

The spelling of 7142994161 in words is "seven billion, one hundred forty-two million, nine hundred ninety-four thousand, one hundred sixty-one".