4142839 has 6 divisors (see below), whose sum is σ = 4213680. Its totient is φ = 4072536.

The previous prime is 4142813. The next prime is 4142857. The reversal of 4142839 is 9382414.

It is not a de Polignac number, because 4142839 - 2¹⁷ = 4011767 is a prime.

It is a super-2 number, since 2×4142839² = 34326229959842, which contains 22 as substring.

It is a Duffinian number.

4142839 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4142839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142899) 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 5 ways as a sum of consecutive naturals, for example, 17977 + ... + 18205.

It is an arithmetic number, because the mean of its divisors is an integer number (702280).

Almost surely, 2^4142839 is an apocalyptic number.

4142839 is a deficient number, since it is larger than the sum of its proper divisors (70841).

4142839 is an frugal number, since it uses more digits than its factorization.

With its successor (4142840) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (308).

4142839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 308 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 4142839 is about 2035.3965215653. The cubic root of 4142839 is about 160.6075727382.

The spelling of 4142839 in words is "four million, one hundred forty-two thousand, eight hundred thirty-nine".