8142722429 has 2 divisors, whose sum is σ = 8142722430. Its totient is φ = 8142722428.

The previous prime is 8142722417. The next prime is 8142722431. The reversal of 8142722429 is 9242272418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6414408100 + 1728314329 = 80090^2 + 41573^2 .

It is a cyclic number.

It is not a de Polignac number, because 8142722429 - 2²⁰ = 8141673853 is a prime.

Together with 8142722431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8142722459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071361214 + 4071361215.

It is an arithmetic number, because the mean of its divisors is an integer number (4071361215).

Almost surely, 2^8142722429 is an apocalyptic number.

It is an amenable number.

8142722429 is a deficient number, since it is larger than the sum of its proper divisors (1).

8142722429 is an equidigital number, since it uses as much as digits as its factorization.

8142722429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 8142722429 is about 90237.0346864302. The cubic root of 8142722429 is about 2011.8235004298.

The spelling of 8142722429 in words is "eight billion, one hundred forty-two million, seven hundred twenty-two thousand, four hundred twenty-nine".