571942139 has 2 divisors, whose sum is σ = 571942140. Its totient is φ = 571942138.

The previous prime is 571942117. The next prime is 571942141. The reversal of 571942139 is 931249175.

571942139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 571942139 - 2¹² = 571938043 is a prime.

Together with 571942141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 571942096 and 571942105.

It is not a weakly prime, because it can be changed into another prime (571942109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285971069 + 285971070.

It is an arithmetic number, because the mean of its divisors is an integer number (285971070).

Almost surely, 2^571942139 is an apocalyptic number.

571942139 is a deficient number, since it is larger than the sum of its proper divisors (1).

571942139 is an equidigital number, since it uses as much as digits as its factorization.

571942139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 571942139 is about 23915.3118106371. The cubic root of 571942139 is about 830.0750592593.

The spelling of 571942139 in words is "five hundred seventy-one million, nine hundred forty-two thousand, one hundred thirty-nine".