1042839 has 12 divisors (see below), whose sum is σ = 1721616. Its totient is φ = 595872.

The previous prime is 1042837. The next prime is 1042849. The reversal of 1042839 is 9382401.

It is not a de Polignac number, because 1042839 - 2¹ = 1042837 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042837) 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, 8214 + ... + 8339.

It is an arithmetic number, because the mean of its divisors is an integer number (143468).

2^1042839 is an apocalyptic number.

1042839 is a deficient number, since it is larger than the sum of its proper divisors (678777).

1042839 is a wasteful number, since it uses less digits than its factorization.

1042839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566 (or 16563 counting only the distinct ones).

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

The square root of 1042839 is about 1021.1948883538. The cubic root of 1042839 is about 101.4080476322.

It can be divided in two parts, 1042 and 839, that added together give a palindrome (1881).

The spelling of 1042839 in words is "one million, forty-two thousand, eight hundred thirty-nine".