839142061 has 2 divisors, whose sum is σ = 839142062. Its totient is φ = 839142060.

The previous prime is 839142023. The next prime is 839142067. The reversal of 839142061 is 160241938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 826850025 + 12292036 = 28755^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 839142061 - 2⁹ = 839141549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (839142067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419571030 + 419571031.

It is an arithmetic number, because the mean of its divisors is an integer number (419571031).

Almost surely, 2^839142061 is an apocalyptic number.

It is an amenable number.

839142061 is a deficient number, since it is larger than the sum of its proper divisors (1).

839142061 is an equidigital number, since it uses as much as digits as its factorization.

839142061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 839142061 is about 28967.9488573147. The cubic root of 839142061 is about 943.2174569827.

Adding to 839142061 its reverse (160241938), we get a palindrome (999383999).

The spelling of 839142061 in words is "eight hundred thirty-nine million, one hundred forty-two thousand, sixty-one".