206142879 has 8 divisors (see below), whose sum is σ = 275452672. Its totient is φ = 137130840.

The previous prime is 206142869. The next prime is 206142889. The reversal of 206142879 is 978241602.

It is an interprime number because it is at equal distance from previous prime (206142869) and next prime (206142889).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206142879 - 2⁵ = 206142847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206142869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72817 + ... + 75594.

It is an arithmetic number, because the mean of its divisors is an integer number (34431584).

Almost surely, 2^206142879 is an apocalyptic number.

206142879 is a deficient number, since it is larger than the sum of its proper divisors (69309793).

206142879 is a wasteful number, since it uses less digits than its factorization.

206142879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148877.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 206142879 is about 14357.6766574540. The cubic root of 206142879 is about 590.7305696681.

The spelling of 206142879 in words is "two hundred six million, one hundred forty-two thousand, eight hundred seventy-nine".