1839942 has 32 divisors (see below), whose sum is σ = 4404960. Its totient is φ = 565920.

The previous prime is 1839923. The next prime is 1839947. The reversal of 1839942 is 2499381.

It is a junction number, because it is equal to n+sod(n) for n = 1839897 and 1839906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1839947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609 + ... + 2012.

It is an arithmetic number, because the mean of its divisors is an integer number (137655).

2^1839942 is an apocalyptic number.

1839942 is an abundant number, since it is smaller than the sum of its proper divisors (2565018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1839942 is a wasteful number, since it uses less digits than its factorization.

1839942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2639 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1839942 is about 1356.4446173729. Note that the first 3 decimals coincide. The cubic root of 1839942 is about 122.5372259487.

The spelling of 1839942 in words is "one million, eight hundred thirty-nine thousand, nine hundred forty-two".