1983942 has 24 divisors (see below), whose sum is σ = 4525560. Its totient is φ = 626400.

The previous prime is 1983931. The next prime is 1983967. The reversal of 1983942 is 2493891.

It is a junction number, because it is equal to n+sod(n) for n = 1983897 and 1983906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2559 + ... + 3242.

It is an arithmetic number, because the mean of its divisors is an integer number (188565).

2^1983942 is an apocalyptic number.

1983942 is an abundant number, since it is smaller than the sum of its proper divisors (2541618).

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

1983942 is a wasteful number, since it uses less digits than its factorization.

1983942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828 (or 5825 counting only the distinct ones).

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

The square root of 1983942 is about 1408.5247601658. The cubic root of 1983942 is about 125.6540016208.

It can be divided in two parts, 19839 and 42, that added together give a square (19881 = 141²).

The spelling of 1983942 in words is "one million, nine hundred eighty-three thousand, nine hundred forty-two".