142686671 has 2 divisors, whose sum is σ = 142686672. Its totient is φ = 142686670.

The previous prime is 142686667. The next prime is 142686673. The reversal of 142686671 is 176686241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142686671 - 2² = 142686667 is a prime.

It is a Sophie Germain prime.

Together with 142686673, 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 (142686673) 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, 71343335 + 71343336.

It is an arithmetic number, because the mean of its divisors is an integer number (71343336).

Almost surely, 2^142686671 is an apocalyptic number.

142686671 is a deficient number, since it is larger than the sum of its proper divisors (1).

142686671 is an equidigital number, since it uses as much as digits as its factorization.

142686671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 142686671 is about 11945.1526151824. The cubic root of 142686671 is about 522.5499395961.

The spelling of 142686671 in words is "one hundred forty-two million, six hundred eighty-six thousand, six hundred seventy-one".