142839 has 12 divisors (see below), whose sum is σ = 210600. Its totient is φ = 93264.

The previous prime is 142837. The next prime is 142841. The reversal of 142839 is 938241.

It is an interprime number because it is at equal distance from previous prime (142837) and next prime (142841).

It is not a de Polignac number, because 142839 - 2¹ = 142837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397 + ... + 665.

It is an arithmetic number, because the mean of its divisors is an integer number (17550).

2¹⁴²⁸³⁹ is an apocalyptic number.

142839 is a deficient number, since it is larger than the sum of its proper divisors (67761).

142839 is a wasteful number, since it uses less digits than its factorization.

142839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 331 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 142839 is about 377.9404715031. The cubic root of 142839 is about 52.2735827551.

The spelling of 142839 in words is "one hundred forty-two thousand, eight hundred thirty-nine".